Thanks a lot for complete tutorial of double pipe heat exchanger. It was a great lesson for me. Whether there is similar tutorial regarding shell and tube heat exchanger with baffles. Thanks once again.
Thank's . The absorber tube is a tube covered in a pyrex tube. In the annular space the void was shouted to cry out the greenhouse effect. As a condition at the limit on the glass tube, a heat flux must be imposed which must already be calculated by a software which uses the Monté carlo method, in which there is a non-uniform distribution of the flux intercepted by the absorber tube.
Thank you Sabrine for sharing your work, its a good work. I have some querry as follows:is the annular space is evacuated/vacumme? if yes then its not possible to design the geometry and analyze in ansys fluent. Please mention from which software you have obtained the heat flux data.
the annular space we can make a air . in this url ther is an exemple of disigned receiver tube of parabolic trough but a have not an experiance to do it in ansus fluent. for a softwar i have ued tow model one is the Soltracing seconde is tonatiuh version 2.2.3 i"s a free software.
hey I'm facing a problem at 29:25 where you start picking out interior surfaces whereas I cannot see them in my contour table, however I see them in boundary conditions and everything seemed to be working up until this point. Could someone help me with this pretty please?
Great tutorial, thx!!! But I want to ask some questions: 1) What would be if you ticked "heat exchanger" in models? How does ansys understand that there is a heat exchange? (What do we have to do in order to ansys will include the heat equetions)? -He includes it when we tick "energy" in models??? 2) In your case the propeties of water (density, thermal conductivity, etc.) is constant along the pipes? (Sometimes physical propeties strongly depend on tempreture, pressure, etc. In this case it's not so important, but what should I do in order to take into account these variations?) I would be very grateful for the answers. p.s. sorry for the mistakes, I'm not quite good in English yet :)
Thanks for your videos, they are amaizing. I would like to ask you something, I'm modeling a pipe surrounded by air and water inside, the boundary condicion is coupled in both cases but I want to set a heat flux over the outer wall. if I do that, then doimaind fluid and solid are not coupled, which is not desired. What could I do for having both, or if it is better to put a heat generation rate instead, what geometric parameters should I take into consideration for calculating the W/m3?. Last question, is there any problem if I do not set the wall thickness in the boundary conditons? because I have seen that the result is different if I put the thickness than if I did not. If you can help me, I would appreciated a lot. Thanks in advance.
First thing is you should check if you had made all the bodies into one part, so that there would not be any auto generated contact surfaces. Second this is wall thickness, if yoh have not modeled the pipe wall in the geometry then fluent would take it as a zero thickness surface layer. So the result would vary accordingly. So plan that way, if your simulation gets affected by the pipe thickness then I would recommend you to use the shell conduction or wall thickness option.
@@AnsysTutor Thanks for your promptly reply, I have made the design of the piping accordingly, e.i., with the proper dimensions of thickness in design modeler. And also, I have done all bodies into one part, so the shadow walls have been generated in fluent. The thing is that when I put heat generation rate and put the thickness wall n BC, I obtain one result, and then I remove the wall thickness and I obtein other. A frined of mine who knows a lot about ANSYS told me not to put the thickness wall in BC, but Im not sure about that. Any way, thanks, I suscribed to your channel. It would be great if you can do tutorials about solar ray tracing related with solar systems which I am struggling with now. Best regards
thanks for this educational content. I have a question: was that necessary to moel the wall in the design modeler? you could assign wall boundary condition with specific thickness in the BC menu in fluent.
I have a doubt here at 12:19 in the video... like 1.Why did you select only the 3 faces for Face Meshing? why u have not selected the Hot fluid face? Please clarify... 2. Also, what about the faces on the other side of pipes i.e at the end ? I mean isn't required to do face meshing for them?
there are many methods by which you can discretize the domain, here I have used "Mapper face meshing" on the 3 surfaces only to distribute the mesh equally on the faces ,if you will give face meshing to the hot fluid domain then there might be some faces(adjacent to inner pipe inner surface) on the hot fluid domain which will not be meshed,that will result in error during solution. for the second question: you can also follow the same procedure at the other end ,but it is not needed as it generally takes the same configuration as given on one side.
Just another great tutorial. Thanks What happens if I want to analyze those temperatures as a function of cold fluid velocity? Lets say I want to increase the velocity from .02 to 0.5 m/s and see the temp drops. For each velocity do I have to run a new calculation? If you have any tutorial on that let me know. Thanks again.
Hello sir,how to decrease the mesh size because I am doing in student version so it is saying mesh size should be below 10lakh ,is there any way to continue..pls help
While adding inflation, you are selecting 3 faces whereas I am able to get only a single face throughout and my results are also wrong in terms of temperature at the exit for both hot and cold fluids... and solution doesn't converge as in the case of tutorial. Could you help me on this? I am not able to identify the mistake which I am making.
Respected sir, I truly like your channel and I have subscribed it, it provides learning in steps..I have a question, I hope you will not mind solving..In the following tutorial we are giving hot & cold inlet, Input values..and we are getting the outcome as their outlet values..can you please tell me, how can we solve it mathematically? to solve it mathematically, we need to give the values of area and overall heat transfer coefficient, so we can solve it by effectiveness method..so can you tell me, where did we put the following values of Area and HT coeff. so we got the outlet values in this tutorial? Please reply ASAP, as we are doing a project on it!
Another question, can i just change the material to air without making changes anyhwere else? like will the whole thing still work with the air? Thank you for your time!
I’m doing a double pipe heat exchanger analysis, as part of my dissertation, in CFD and was wondering if there is a way to make a quarter version of this?
Yes ,you can do the quarter analysis using symmetric approach, you should watch our tutorial on symmetric heat conduction in a quarter model to get the idea.
@@AnsysTutor Thanks alot! i'll give it a watch and i'll message back if there are an issues when creating it. Do you mind giving me your email address?
btw can you do a tutorial about piping flexibility in ansys and i have the extension ASME PIPE CHECK.. and I've found a tutorial about but it's not complete and neither really clear.... www.ansys-blog.com/ansys-pipe-simulation/ please do a tutorial about that, it would be great!
yeah that would be useful too if you do a static structural analysis a small piping system with supports but with the extension of ASME PIPE CHECk it works with beams so I have some with the mesh I think, and this extension has more special characteristics for a piping system, pressure pipe, temperature and so on... also, I could share you this extension and you could check it out...
entire tutorial is really superb. but I have strucked with only one thing that why we are selecting via system coupling option for wall inner tube and outer tube. clarify my doubt please.
Can I do this exact tutorial as my mini project with addition of providing some background theory? Or do you have any suggestion in addition to this? hope to hear from you soon. :)
Sir i have problem when in the 24:35 . I'm using ANSYS R1, there are different option so i confius to choose. Can you help me sir? this is my final year project, thank you so much🥰
sir why are we giving the inflation to cold fluid....it should be for pipe only...because for accuracy we provide the boundary conditions to bodies not not to the fluids....please clarify that, if i am not correct somewhere.
@@AnsysTutor thanks for clearing the concept. I have a question related to meshing ,which should we prefer in meshing? Curvature, proximity or proximity and curvature?
@@AnsysTutor Thanks Sir. But I have a complex geom and by curvature and proximity my elements counts are more than 36Million. What do u think is this OK? Or should I decrease no. Of elements by using curvature?
Will try to make the tutorial, if you have any preliminary research paper or tutorial pdf on this then please send to us it would really help us. our mail id ansystutor7@gmail.com
Hi bro, very nice tuto but i have a doubt: why didn't you create interfaces? its'nt always necessary? why didnt use tetraedrons elements on the domain? thank u. am doing a similar simulation and i have had many problems
I have not created interfaces that is because we are not applying any boundary conditions at the interfaces. So no need of this. Some part of the fluid domain is tetrahedral also. You can use any type of elements as per your geometry , generally if your geometry contains bends then use tetrahedral elements . If its a simple geometry like the pipe wall then there is no need of taking tetra-hedral shaped elements.
Sir ,what if I'm using a pump Then at the inlet I'm given some mass flow rate or velocity suppose But at the outlet by default if I keep pressure outlet is it correct?like the pressure is zero by default?
thanks for your help. I am doing DPHE analysis with modified twisted tape. I can't modify geometry due to my research limit. Can you suggest to me some video/lecture for best quality meshing for, DOuble pipe heat exchanger with twisted tape. I want maximum skeness less than 0.75, currently it is 1.
Excuse me Sir. I am making a heat transfer simulation of an electric engine which has liquid fluid between the rotor and the case, the fluid is not changing ( closed engine) so I cannot make and inlet and an outlet but because of the rotor movement (4000rpm) still being a forced convection. How could I simulate it ? Thanks in advance
Thanks for the great video. I wish I could find this pipe-in-pipe simulation tutorial in openFoam also. I'm totally stuck in coaxial pipe simulations in openFoam
dear sir, i have a problem. i did the same thing what you did in the tutorial. but i have no heat transfer between hot and cold fluids. even i tried coupled wall option enable in the mesh interface, still its show no heat transfer in contours. i have a question in meshing dialog box. connection option. by default, it takes 4 connections. 1) hot fluid with inner tube 2) inner tube with cold fluid 3) cold fluid to outer tube 4)hot water and cold water. so i delete 4th one. but still i have no heat transfer. can you help me sir......................????????????
Delete all the surfaces created in connection and then check. While creating the geometry you should have select all the bodies and create a single part. So there would be no contact surfaces in connection. Try this and reply if it solved or not.
Great video again :)), but I have a question. Everything works but then i tried to model laminar flow and instead of k-epsilon I put laminar and then erros appaerd. Do you have any su suggestuons. Further more can you explain me please termal condition "coupled" and "via system coupling"?
I put inflation layers on every single solid/fluid interface and have no idea what i am doing wrong...the same problem i got in example with two pipes inside isolation...how can I discover if there are any gaps or faild mash? I used hide body to check mesh on the different interfaces and everything seems to be correct. Mash has 366118 nodes and 1 244 337 elements
Hlo sir I have doubt I done the analysis also sir but I am not getting the results it is showing me display -object :No rendering surfaces have been set. Plz tell me sir how to get it .
Hello, I am having temperature limitation warnings after 60th iteration (for more than 500 cells in 11th zone in domain 1). Any suggestions how to solve it?
try to mesh the domain properly, the temperature limitation warning generally comes if there is a error in meshing. Dont forget to assign inflation layers near solid -liquid interface.
I have one doubt in your temperature results that you got DTh=333-331.53 = 1.47 K DTc=309.22-303 = 6.22 K 1. How is it possible that cold fluid gains much more temp. Than hot fluid looses. 2. One more thing In simulation I think we neglected all losses than why did such differences found Thanks...
There is no way you can compare temperature loss with temperature gain as the mass flow rate in both the case is not same due to different geometry . so it would be better to compare the Heat loss= heat gain concept . i.e Q=mCpdT
Ansys-Tutor thanks for your reply, yes I'm comparing heat transfer rate for both, even after diff. (m) I think both heat gain and heat loss must be equal, when we did simulation in Ansys , as we neglected all losses, plz clarify me
Ansys-Tutor the Ansys 18.2 doesn't have the Off feature, many people don't know that since no one is using it, but thank you for your help. If you find some follow up, do let me know. Thanks.
in the "details of mesh" see there might be an option :- "size function" , make it "off" if its not there then please send a screenshot of the window to ansystutor7@gmail.com . we will definitely help you in this matter.
Hello, I am facing a problem. I have to create a face between two surfaces in order to give it a named selection (name it as inlet for air flow but I am unable to do so. Can you help me? It's basically faces of two bodies and the gap between them is supposed to be a face for air inlet flow.
you cant give boundary conditions in the middle of any domain. You can only see the result in that plane if you want by creating a plane in Post processing result.
Shadow walls are generated if there are more than one cellzones in any problem, its the part of the wall adjacent to next cellzone. You dont need to assign any bc to the shadow wall, it will be assigned by the solver ,only you need to assign BC to the wall.
i m doing simulation of parabolic trough collector receiver tube n facing a problem. in my problem there r two concentric tubes. inner having water n outer hving air. i want to conduct heat from inner pipe outer surface to water. bt conduction is not happening. only air is heated. plz help how to conduct heat.
@@AnsysTutor thank u so much i can't wait to see that 😊 , if u put explanations on the boundary conditions why u choose that , it will be so gratefully for you
I have tried this sir and I have generated the mesh successfully but as I am using ansys student version that is it is showing that my cell no is more than 512000. Now please help me to reduce the cell numbers. I hope you reply me a bit fast Thanks
@@AnsysTutor sir I didnot understand it honestly, please explain it a bit briefly. How can I increase the no of element after meshing. Do I need to reduce the size of the geometry
@@AnsysTutor sir I am really sorry to disturb you again and again, as I am a new user of this software, can you please tell me where I will find body sizing option.
You can customize the mesh as per your requirement. And while selecting the edge you must ensure the adjacent domain must be hidden , otherwise the edge sizing would be on the adjacent domain if the edge has not been selcted properly. Keep these things in mind.
Ansys-Tutor# Hello sir please help me I have to make numerical simulation for cross flow 8 pipe heat exchanger , water and air as working fluid. Their is many tutorial on RUclips; But no one of this tutorial give me a close . results to my experimental work please please please help my
Ansys-Tutor can i give you project data and you work it from beginning because i have simple knowledge about ansys and i want the study in short time please can you help me if your answer is yes tell me to send you the data
Ansys-Tutor my friend hmedanyabdullah sent them to you and i will send it once more i am grateful to you onething, i want Explanation by video and your voice when you are working on the project
Very nice n informative thanku...blessing for ansys user beginners
So nice of you
Thanks a lot for complete tutorial of double pipe heat exchanger. It was a great lesson for me. Whether there is similar tutorial regarding shell and tube heat exchanger with baffles. Thanks once again.
Try to do it yourself if you are facing any problem then let us know.
thx i m learning fluent because of you
thank you :)
Great Tutorial, Thankyou!
watching tutorial while listening to music 'safe and sound'.
You are welcome.
Thank's . The absorber tube is a tube covered in a pyrex tube. In the annular space the void was shouted to cry out the greenhouse effect. As a condition at the limit on the glass tube, a heat flux must be imposed which must already be calculated by a software which uses the Monté carlo method, in which there is a non-uniform distribution of the flux intercepted by the absorber tube.
Thank you Sabrine for sharing your work, its a good work. I have some querry as follows:is the annular space is evacuated/vacumme? if yes then its not possible to design the geometry and analyze in ansys fluent.
Please mention from which software you have obtained the heat flux data.
the annular space we can make a air . in this url ther is an exemple of disigned receiver tube of parabolic trough but a have not an experiance to do it in ansus fluent. for a softwar i have ued tow model one is the Soltracing seconde is tonatiuh version 2.2.3 i"s a free software.
thank you for your attention; the annular space we can use a air. The softwear I used for a heat flux is Soltrace and an aother is Tonatiuh
Sabrine Fadi
Please , do you work cfd of receiver tube in ptc or not? .
If yes please could you help me ?
m also doing the same. can u help me.
IT'S A VERY INFORMATIVE VIDEO, IS THERE ANY VIDEO AVAILABLE ON SHELL AND TUBE HEAT EXCHANGER WITH BAFFLES..
hey I'm facing a problem at 29:25 where you start picking out interior surfaces whereas I cannot see them in my contour table, however I see them in boundary conditions and everything seemed to be working up until this point. Could someone help me with this pretty please?
It might be there try to move the slider.
I got the same problem, any ideas?
Great tutorial, thx!!!
But I want to ask some questions:
1) What would be if you ticked "heat exchanger" in models?
How does ansys understand that there is a heat exchange? (What do we have to do in order to ansys will include the heat equetions)?
-He includes it when we tick "energy" in models???
2) In your case the propeties of water (density, thermal conductivity, etc.) is constant along the pipes? (Sometimes physical propeties strongly depend on tempreture, pressure, etc. In this case it's not so important, but what should I do in order to take into account these variations?)
I would be very grateful for the answers.
p.s. sorry for the mistakes, I'm not quite good in English yet :)
Hi, thanks for the video. I have a question for part 17:54, should the inflation be made on the hot fluid, and not on the inner pipe?
Yes, you are right inflation layers must be present in the fluid domain only.
thank you.. im learning a lot from your videos, thank you again :)
Thanks for your videos, they are amaizing. I would like to ask you something, I'm modeling a pipe surrounded by air and water inside, the boundary condicion is coupled in both cases but I want to set a heat flux over the outer wall. if I do that, then doimaind fluid and solid are not coupled, which is not desired. What could I do for having both, or if it is better to put a heat generation rate instead, what geometric parameters should I take into consideration for calculating the W/m3?. Last question, is there any problem if I do not set the wall thickness in the boundary conditons? because I have seen that the result is different if I put the thickness than if I did not. If you can help me, I would appreciated a lot. Thanks in advance.
First thing is you should check if you had made all the bodies into one part, so that there would not be any auto generated contact surfaces. Second this is wall thickness, if yoh have not modeled the pipe wall in the geometry then fluent would take it as a zero thickness surface layer. So the result would vary accordingly. So plan that way, if your simulation gets affected by the pipe thickness then I would recommend you to use the shell conduction or wall thickness option.
@@AnsysTutor Thanks for your promptly reply, I have made the design of the piping accordingly, e.i., with the proper dimensions of thickness in design modeler. And also, I have done all bodies into one part, so the shadow walls have been generated in fluent. The thing is that when I put heat generation rate and put the thickness wall n BC, I obtain one result, and then I remove the wall thickness and I obtein other. A frined of mine who knows a lot about ANSYS told me not to put the thickness wall in BC, but Im not sure about that. Any way, thanks, I suscribed to your channel. It would be great if you can do tutorials about solar ray tracing related with solar systems which I am struggling with now. Best regards
thanks for this educational content. I have a question: was that necessary to moel the wall in the design modeler? you could assign wall boundary condition with specific thickness in the BC menu in fluent.
Yes, you can also do like that , it depends upon the problem & resources availability.
Great Tutorial! Thank you!
Welcome 🙂
I have a doubt here at 12:19 in the video... like
1.Why did you select only the 3 faces for Face Meshing? why u have not selected the Hot fluid face? Please clarify...
2. Also, what about the faces on the other side of pipes i.e at the end ? I mean isn't required to do face meshing for them?
there are many methods by which you can discretize the domain, here I have used "Mapper face meshing" on the 3 surfaces only to distribute the mesh equally on the faces ,if you will give face meshing to the hot fluid domain then there might be some faces(adjacent to inner pipe inner surface) on the hot fluid domain which will not be meshed,that will result in error during solution.
for the second question: you can also follow the same procedure at the other end ,but it is not needed as it generally takes the same configuration as given on one side.
Hi, Thank you so much for making this video...
thank u sir, it's so useful for me. thank u again~
You are Most welcome.
Thank you for the great work. It helped me a lot. Is there any tutorial in which you have analyzed heat loss from the insulated pipe?
ruclips.net/video/Scg05a4yR1U/видео.html
ruclips.net/video/OqARrDvyPsA/видео.html
@@AnsysTutor Thank you very much for such a quick response.
Great Tutorial. Very nice Thank you so mush
Most welcome:)
Just another great tutorial. Thanks
What happens if I want to analyze those temperatures as a function of cold fluid velocity? Lets say I want to increase the velocity from .02 to 0.5 m/s and see the temp drops. For each velocity do I have to run a new calculation? If you have any tutorial on that let me know. Thanks again.
You need to take the help of parametric analysis for that case. We have tutorials on that.
ruclips.net/video/gIWqNEAcmsw/видео.html
ANSYS Parametric Analysis: ruclips.net/p/PLykANdmho34wIVk0x08tlJyJ5wTE9JTWZ
@@AnsysTutor i will take a look at them.thanks a lot
Hello sir,how to decrease the mesh size because I am doing in student version so it is saying mesh size should be below 10lakh ,is there any way to continue..pls help
You need to increase the mesh size so that it would generate fewer amounts of nodes or no of elements.
Why the heat that the hot fluid loses ( Qh = 0,19 * 4180 * (333-331,53)) is not the same that the cold one gets ( Qc = 0,081 * 4180 * (309,22-303))?
These are numerical results obtained by several iterations. It cant be same as the theorical value. It would have some approximate error.
Great work. well done
While adding inflation, you are selecting 3 faces whereas I am able to get only a single face throughout and my results are also wrong in terms of temperature at the exit for both hot and cold fluids... and solution doesn't converge as in the case of tutorial. Could you help me on this? I am not able to identify the mistake which I am making.
You need to change to face selection while selecting the face for inflation. Have you made all the bodies into a single part or not.
Oh yes.. I have not made them into a single part.. Will do that and see.. Thanks a lot for your quick response.
You are welcome.
Respected sir, I truly like your channel and I have subscribed it, it provides learning in steps..I have a question, I hope you will not mind solving..In the following tutorial we are giving hot & cold inlet, Input values..and we are getting the outcome as their outlet values..can you please tell me, how can we solve it mathematically? to solve it mathematically, we need to give the values of area and overall heat transfer coefficient, so we can solve it by effectiveness method..so can you tell me, where did we put the following values of Area and HT coeff. so we got the outlet values in this tutorial? Please reply ASAP, as we are doing a project on it!
This tutorial was a request from one of our subsciber, he had some experimental work on this & wants numerical validation of his work.
sir in the result display (view 1) appears black instead of showing model, any solution?
How to insert a twisted pipe inside the inner pipe in counterflow experiment?
We have a tutorial on twisted insert, model the pipe like that.
Another question, can i just change the material to air without making changes anyhwere else? like will the whole thing still work with the air? Thank you for your time!
yes, you can change /modify any material . This is to be done in fluent .
Can you share from where did u obtain this model ? Like which book or randomly was it modelled ?
I’m doing a double pipe heat exchanger analysis, as part of my dissertation, in CFD and was wondering if there is a way to make a quarter version of this?
Yes ,you can do the quarter analysis using symmetric approach, you should watch our tutorial on symmetric heat conduction in a quarter model to get the idea.
@@AnsysTutor Thanks alot! i'll give it a watch and i'll message back if there are an issues when creating it. Do you mind giving me your email address?
@@louismcgurk1620 ansystutor7@gmail.com, you can visit the about tab to get all our social media links .
Thank you!
GREAT TUTORIAL!!! THANKS SO MUCH...
Most welcome.:)
btw can you do a tutorial about piping flexibility in ansys and i have the extension ASME PIPE CHECK..
and I've found a tutorial about but it's not complete and neither really clear....
www.ansys-blog.com/ansys-pipe-simulation/
please do a tutorial about that, it would be great!
Do you want the tutorial of ANSYS static structural analysis of pipe?
yeah that would be useful too if you do a static structural analysis a small piping system with supports but with the extension of ASME PIPE CHECk it works with beams so I have some with the mesh I think, and this extension has more special characteristics for a piping system, pressure pipe, temperature and so on...
also, I could share you this extension and you could check it out...
Good work my dear friend.
Thank you very much
@@AnsysTutor can we have a boiler tutorial?
If you have any reference or research paper on such kind of cfd analysis then please send us, will try to make a tutorial on that.
@@AnsysTutor what is your email id?
ansystutor7@gmail.com
i was wondering would the results in the video be the same if the inner tube fluid was hot air and the outer tube fluid was cold water
Try it your self and check, result will be different as the working fluid is different.
For parallel flow what would need to be changed please?
The inlet in both pipe would be at the same side.
@@AnsysTutor thank you, do you have any 2d demonstrations of a concentric heat exchanger ?
entire tutorial is really superb. but I have strucked with only one thing that why we are selecting via system coupling option for wall inner tube and outer tube. clarify my doubt please.
via system coupling option will lead the wall to conduct heat from the domain results.
Is it necessary to create the inner tube longer than the outer tube? If not do I still need to create inflation layers on the inner tube?
It's not necessary to make inner tube longer, create inflation layer on outer surface of fluid domain which is in contact with pipe surface.
@@AnsysTutor thank you for clarifying all our doubts, i appreciate it.
Hi,
You selected "Enhanced Wall Treatment" for k-epsilon turbulence option. Did you consider y+ value while selecting it?
Thanks
for enhanced wall treatment Y+ value might not be reqired.
Can i get complete details on this
Can I do this exact tutorial as my mini project with addition of providing some background theory? Or do you have any suggestion in addition to this? hope to hear from you soon. :)
Yes you can do this as ur project. It depends upon you what modification you want to make.
Sir i have problem when in the 24:35 . I'm using ANSYS R1, there are different option so i confius to choose. Can you help me sir? this is my final year project, thank you so much🥰
at 29:34, i could not find the selection for "interior-cold_fluid" and "interior-hot_fluid"
sir why are we giving the inflation to cold fluid....it should be for pipe only...because for accuracy we provide the boundary conditions to bodies not not to the fluids....please clarify that, if i am not correct somewhere.
Inflation layers only given for proper distribution of the mesh. You can also mesh without it there is no problem.
is it possible to use molten salt instead of water ? is this option available in software?
Yes you can define the molten salt, you only need to change the material properties.
If we insert a twisted tape inside a inner pipe , what r the changes should be made in the meshing operation
for the twisted tape geometry you can assign hexahedral cells, and for the outer fluid domain you can assign tetrahedral cells.
@@AnsysTutor hello, if i used another type of insert (double sided winglet), should i use the same configuration or not? thanks before.
Iam getting the error "The fluent application has failed to validate the connection" how do I solve it
You might have copied the ansys file from other system without its supporting folder. Please check once.
Hi ! I have a real quick question. Why we make geometry as a single part?
It prevents the creation of unnecessary contact surfaces and makes a conformal meshing.
@@AnsysTutor thanks for clearing the concept. I have a question related to meshing ,which should we prefer in meshing? Curvature, proximity or proximity and curvature?
Use proximity and curvature option for a better mesh.
@@AnsysTutor Thanks Sir. But I have a complex geom and by curvature and proximity my elements counts are more than 36Million. What do u think is this OK? Or should I decrease no. Of elements by using curvature?
Hi Sir I am stuck in 9.16
How to bold under 4 parts, 4 bodies???
Hold the ctrl key and select all the bodies, Make all into one part.
I got it. Thanks
Sir, please provide the vedio for modelling of heat pipe with wick.
Will try to make the tutorial, if you have any preliminary research paper or tutorial pdf on this then please send to us it would really help us. our mail id ansystutor7@gmail.com
hi i wanna ask you why did you mirror the model??
The use of mirror tool option has been shown in this tutorial.
Hi bro, very nice tuto but i have a doubt: why didn't you create interfaces? its'nt always necessary? why didnt use tetraedrons elements on the domain? thank u. am doing a similar simulation and i have had many problems
I have not created interfaces that is because we are not applying any boundary conditions at the interfaces. So no need of this. Some part of the fluid domain is tetrahedral also. You can use any type of elements as per your geometry , generally if your geometry contains bends then use tetrahedral elements . If its a simple geometry like the pipe wall then there is no need of taking tetra-hedral shaped elements.
Hi can i integrate phase change in this heat exchanger?
Yes . try it , but you have to choose the wall temperature and appropriate Boundary conditions which would be sufficient to melt the PCM.
sorry.can i doing outer wall thikness equal zero and doing fill
Thank so much for this explanation though this nice video, but may you make one with passive flow
can you please elaborate .
Sir ,what if I'm using a pump
Then at the inlet I'm given some mass flow rate or velocity suppose
But at the outlet by default if I keep pressure outlet is it correct?like the pressure is zero by default?
ruclips.net/video/rNmAS6InVlE/видео.html
Error: Dot product of flow direction and area normal is zero.
Check the specified flow direction on Mass Flow Inlet boundary
conditions for thread 16.
Error Object: #f
help me please
Have you changed the default values of the standard initialisation?
How to do solution animation in 18.1 version, its not showing exactly what you did in this video
check the mesh.
thanks for your help.
I am doing DPHE analysis with modified twisted tape.
I can't modify geometry due to my research limit.
Can you suggest to me some video/lecture for best quality meshing for,
DOuble pipe heat exchanger with twisted tape.
I want maximum skeness less than 0.75, currently it is 1.
Try to use the hexdominant method.
Excuse me Sir. I am making a heat transfer simulation of an electric engine which has liquid fluid between the rotor and the case, the fluid is not changing ( closed engine) so I cannot make and inlet and an outlet but because of the rotor movement (4000rpm) still being a forced convection. How could I simulate it ? Thanks in advance
are you using dynamic meshing?
Thanks for the great video. I wish I could find this pipe-in-pipe simulation tutorial in openFoam also. I'm totally stuck in coaxial pipe simulations in openFoam
you can try it in ANSYS . Its is more user friendly than openFoam.
Anyluck finding openFoam tutorial? @Hani
Hi why did you not use inflation for the fluid and pipe for the smaller diameter pipe?
Inflation layer mainly provided to prevent any gap during meshing you can also give inflation layer near the inner pipe.
I see, but in terms of good heat transfer is there a need for a certain level of inflation on each sides of the wall?
Inflation layers will create a better meshing, It depends upon your geometry .analyze your model with increasing inflation layers.
sir i am getting negative nusselt no. Can you please tell me what condition i taken wrong ?
Are you getting any error or warning message in the iteration page?
dear sir, i have a problem. i did the same thing what you did in the tutorial. but i have no heat transfer between hot and cold fluids. even i tried coupled wall option enable in the mesh interface, still its show no heat transfer in contours. i have a question in meshing dialog box. connection option. by default, it takes 4 connections. 1) hot fluid with inner tube 2) inner tube with cold fluid 3) cold fluid to outer tube 4)hot water and cold water. so i delete 4th one. but still i have no heat transfer. can you help me sir......................????????????
Delete all the surfaces created in connection and then check. While creating the geometry you should have select all the bodies and create a single part. So there would be no contact surfaces in connection. Try this and reply if it solved or not.
Great video again :)), but I have a question. Everything works but then i tried to model laminar flow and instead of k-epsilon I put laminar and then erros appaerd. Do you have any su suggestuons. Further more can you explain me please termal condition "coupled" and "via system coupling"?
which type of error?
inversed flow in first 20 iterations and later temperature limitations
there might be any void space/ gap between two zones that results in temperature limitations warning please check the meshing.
I put inflation layers on every single solid/fluid interface and have no idea what i am doing wrong...the same problem i got in example with two pipes inside isolation...how can I discover if there are any gaps or faild mash? I used hide body to check mesh on the different interfaces and everything seems to be correct. Mash has 366118 nodes and 1 244 337 elements
send your file to ansystutor7@gmail.com, let me check where you are wrong.
Hlo sir I have doubt I done the analysis also sir but I am not getting the results it is showing me display -object :No rendering surfaces have been set. Plz tell me sir how to get it .
You need to select the surface on which you want the analysis.
Hello, I am having temperature limitation warnings after 60th iteration (for more than 500 cells in 11th zone in domain 1). Any suggestions how to solve it?
try to mesh the domain properly, the temperature limitation warning generally comes if there is a error in meshing. Dont forget to assign inflation layers near solid -liquid interface.
Problem was in meshing, I assigned inflation on more solid-liquid interfaces. Although, problem is solved, thank you dear Sir.
I have one doubt in your temperature results that you got DTh=333-331.53 = 1.47 K
DTc=309.22-303 = 6.22 K
1. How is it possible that cold fluid gains much more temp. Than hot fluid looses.
2. One more thing In simulation I think we neglected all losses than why did such differences found
Thanks...
There is no way you can compare temperature loss with temperature gain as the mass flow rate in both the case is not same due to different geometry . so it would be better to compare the Heat loss= heat gain concept . i.e Q=mCpdT
Ansys-Tutor thanks for your reply, yes I'm comparing heat transfer rate for both, even after diff. (m)
I think both heat gain and heat loss must be equal, when we did simulation in Ansys , as we neglected all losses, plz clarify me
i m not getting what are u doing in meshing, y r using so much mesh types, Explain Please
using ansys 18.2,i am getting the error:- interval assignment for map/sweep mesh failed. please check mesh size definition
Delete any contact surface generated. And check for the advance sizing function wheather it is "off" or not ,if not then make it.
Ansys-Tutor the Ansys 18.2 doesn't have the Off feature, many people don't know that since no one is using it, but thank you for your help. If you find some follow up, do let me know. Thanks.
in the "details of mesh" see there might be an option :- "size function" , make it "off" if its not there then please send a screenshot of the window to ansystutor7@gmail.com . we will definitely help you in this matter.
Hello, I am facing a problem. I have to create a face between two surfaces in order to give it a named selection (name it as inlet for air flow but I am unable to do so. Can you help me? It's basically faces of two bodies and the gap between them is supposed to be a face for air inlet flow.
you cant give boundary conditions in the middle of any domain. You can only see the result in that plane if you want by creating a plane in Post processing result.
If you want can share an image of the domain and details of your problem to our email id: ansystutor7@gmail.com.
still the boundary condition part is the most confusing part for me, especially with shadow walls.
Shadow walls are generated if there are more than one cellzones in any problem, its the part of the wall adjacent to next cellzone. You dont need to assign any bc to the shadow wall, it will be assigned by the solver ,only you need to assign BC to the wall.
How do you get the design parameters foe doble tube heat exchanger? Can u tell me some references?
It was a request tutorial video from one of my subscribers, he had provided all these design details.
@@AnsysTutorCan you tell me why we use another plane in design modeller ? And can we make both the pipes in Different plane?
@@AnsysTutor can you please make a tutorial video for me i will provides all the design
details to u?
Why select enhanced walled treatment?
Which is more closer to real scenario. K E RNG or KE enhanced wall?
Enhanced wall treatment generally selected if the y+ value is known .so the fluent will calculate the y plus value accordingly.
@@AnsysTutor of y + value is not known then which model is better
enhanced wall treatment will be best suitable for that case.
i m doing simulation of parabolic trough collector receiver tube n facing a problem. in my problem there r two concentric tubes. inner having water n outer hving air. i want to conduct heat from inner pipe outer surface to water. bt conduction is not happening. only air is heated. plz help how to conduct heat.
Thank you for the great tutorial. I couldn't complete it thogh, since I'm using student version and it's limited to 512000 cells
512000 cells are sufficient to get the result, only you need to create the cells properly,
Hello Lucas, have you solved the cell problem? I am also facing the same
pls apploud the rotary kiln 350 tpd design and thermal ansys
Please share more details regarding this to ansystutor7@gmail.com
sir i have followed your steps but i couldn't get converge. Please help me sir
Can you share the image of iteration vs residual plot
Nice Video but it would be great if explained all of the parameters.
thanks for the suggestion, we have tried to explain by the help of text inside the video if have any doubt in any step , then please free to ask.
thank u sir for the tutorial can u do the same example but this time the outer wall is square and solid not flow pass through with cfx pls
wiil try to do a tutorial on this in CFX
@@AnsysTutor thank u so much i can't wait to see that 😊 , if u put explanations on the boundary conditions why u choose that , it will be so gratefully for you
I have tried this sir and I have generated the mesh successfully but as I am using ansys student version that is it is showing that my cell no is more than 512000. Now please help me to reduce the cell numbers. I hope you reply me a bit fast
Thanks
Increase the number of elements. Increase it by increasing the element sizes in body sizing or increase the default size .
@@AnsysTutor sir I didnot understand it honestly, please explain it a bit briefly. How can I increase the no of element after meshing. Do I need to reduce the size of the geometry
@@manashlekharu1436 ,no need to change the geometry. Only insert the body sizing option and change the element size.
@@AnsysTutor sir I am really sorry to disturb you again and again, as I am a new user of this software, can you please tell me where I will find body sizing option.
ruclips.net/video/KpryftahXWI/видео.html
Floating exception error,plz help
Why you didn't define interfaces between solid walls and fluid?
yes you can define interface , for simplicity I have just omitted that.
I have problem while volume rendering it is nt possible by me
What are the problems that you are facing.
@@AnsysTutor sir, the volume rendering not shows colours while temperature and other entity
Are you getting the contours of the parameters.?
How we can do the grid independent analysis in this
Only check the flow velocity.
I have a doubt at 17:05, my central mesh is failing, the one after inflation. What can the reason be?
Have you made the advanced sizing function "off"?
Ansys-Tutor I will try that. Also, at 14:50, you got tetrahedron mesh without doing anything, I'm getting a similar mesh to outside tube.
You can customize the mesh as per your requirement. And while selecting the edge you must ensure the adjacent domain must be hidden , otherwise the edge sizing would be on the adjacent domain if the edge has not been selcted properly. Keep these things in mind.
please i need a help for simulat a receiver of parabolic trough solar collectors
please tell us how you want to simulate parabolic trough receiver tube. If its possible we will definitely help you.
i need help for simulation of reciever of PTC .would u guide me
inflation layers in the solid ???????
I want to Know total Heat transfer rate from hot fluid to cold fluid how can i get that
You need to find the difference between inlet and outlet temperature then use the theoretical formula q=hadT
How do I calculate the nusslet number
We have tutorials regarding that.
ruclips.net/video/pav5rnq2jhk/видео.html
ruclips.net/video/tLkze27-9HE/видео.html
in size foud problem i donont solving
Is there any problem in meshing?
Sir please send this project report as soon as possible
Sorry, dont have any project report.
sir can u please provide me the geometry
Mail us ansystutor7@gmail.com
Ansys-Tutor#
Hello sir please help me
I have to make numerical simulation for cross flow 8 pipe heat exchanger , water and air as working fluid. Their is many tutorial on RUclips; But no one of this tutorial give me a close .
results to my experimental work
please please please help my
Whould you please share the problem that you are facing in your analysis.
could you please give me your email to send you image and my solidwrks geometry
ansystutor7@gmail.com
Please, I want to study a two-phase fluid flow within solar concentrates parabolic trough
Do you want to model it in multiphase model ?
+Ansys-Tutor yes multiphase
+Ansys-Tutor Do you want to give you the parameters? like pressure and temperature
ok,Send to our mail.
me too i want the same model
hello
I have a project on fluid flow inside a solar receiver and i want to do it for me and I will pay you the costs
can you help me with this ?
Share your work if its possible then I will definitely help you.mail to ansystutor7@gmail.com
Ansys-Tutor can i give you project data and you work it from beginning because i have simple knowledge about ansys and i want the study in short time
please can you help me
if your answer is yes tell me to send you the data
Ok send it.
Ansys-Tutor my friend hmedanyabdullah sent them to you and i will send it once more
i am grateful to you
onething, i want Explanation by video and your voice when you are working on the project
Ya i have the email, explain me in detail how you want to simulate the problem.
can you send me your mesh file please sir
yacineboumk@gmail.com
Could you please provide me your email if you do not mind?
ansystutor7@gmail.com
Great Tutorial! Thank you!
can you send me your mesh file please sir
yacineboumk@gmail.com
can you send me your mesh file please sir
yacineboumk@gmail.com