ANSYS Fluent Tutorials | Flow in Between Rotating Cylinders | ANSYS Fluent Rotating Cylinder
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- Опубликовано: 20 авг 2024
- There are two concentric cylinders. The inner cylinder is rotating at an angular velocity of 40 radians per second. The outer cylinder is kept stationary. The water is flowing in the annular space between the cylinders. Analyze the effect of cylinder rotation on the fluid flow.
What would you learn from this tutorial?
👉 Geometry Creation using Primitives option in ANSYS Design Modeller.
👉 Application of Sweep Mesh Method.
👉 Application of moving wall boundary condition for a 3D geometry.
👉 Solver setup & CFD Post-Processing.
#ansysfluent #CFD #tutorial 
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The only youtube channel giving very detailed and clear cfd tutorial thank you and pls do more videos in cfd and cae👏👏
Thanks for you words, will try to add more tutorial videos.
Bro, you are the lifesaviour
Thank you Sanket.
This class is good and is useful. Do more like this. Really thank you for this.
Thanks for your comment.
WOOOOW You are professional, please prepare more for us.
I highly appreciate what you do
Than you
You are welcome.
Dear Ansys Tutor, I am having some issue in using UDS (user defined scalar) in Ansys Fluent. The problem goes like this
There is a 2D horizontal pipe of length say 500mm and radius 10mm. Air flows through it (from inside) with an inlet velocity (mean) and temperature of 0.1 m/s and 600 degree. Initial temperature of complete domain is 300 degree. Top wall is insulated and bottom wall is to treated as "axis". Find the temperature profile after some time (say 2 seconds). Till now the problem is pretty simple and straight forward.
Now the problem arises when instead of using ENERGY EQUATION from models (available in Ansys Fluent), we are asked to solve the same problem using TRANSPORT EQUATION (by using UDS) and the default energy equation available in the models is switched OFF.
This will give all of us a crystal clear understanding of how to work with UDS.
Thanks in advance.
By the way ur Ansys videos are simply great and very helpful.
Sorry, i have no experience of such type of problem, cant help you on that.
first of all i'd like to thank you for these most helpful videos on RUclips, i have really learned a lot! now I am doing the research about ANSYS simulation of two-way fluid-structure interaction on cantilever beam. This is to study about the effect of fluid speeds on the displacement and frequency response on cantilever beam. The cantilever beam will be subjected to fluid velocity (cross flow) on the enclosure fluid channel. Thus, i sincerely need sir help and create the video in detail about the two-way coupling FSI. very appreciate and thanks to sir.
Sir, I was looking forward to such a problem. Thank you for sharing this.
You are most welcome.
thanks, it was so helpful and easy to understand
Thank you.
thanx for this amazing tutorial
keep it up ..
Thank you Aftab.
Hello. Thank you for the tutorial. Why using transient solver with constant boundary conditions?
The inlet flow velocity need not to be changed in transient simulation. Transient solver results gives us the flow behaviour and changes in the rotating pipe in the given time period.
Great tutorial sir
Sir can u suggest me about defining the boundary conditions
My problem statement is i have to analyse the hallow cylindrical sealed Hull which will be under water in sea at the depth of 100m,I have to check whether the object will collapse, I have defined the hydrostatic pressure, pressure, fixed support in static structural with large deflection on.
Can u please suggest me what alll things to be done in order to get accurate result.
Many of them suggested to use non linear buckling analysis to get accurate result but if I do that the results are non acceptable
Please help me sir I have been trying to find answer for this from long time
Even I am Ec engineering student with less mechanical topic knowledge
Though I have not much expertise on structural analysis, I would suggest you to take reference from any standard research paper. Observe their work , which method and how they have analysed the similar problem.
@@AnsysTutor okay thank u
Great video and explanation!
In 3:29 you choose an axisymmetric algorithm, but I don't have that option. How can I enable it? Or is it because of the license, perhaps? I'm using an academic license in 18.2 version. It's a big problem for me because it's that option that makes the mesh to be better shaped at the inlet and outlet, otherwise I have to run with those deformed quad cells on the mesh.
Its due the version that you are using, the axisymmetric algorithm option is only available in latest versions. But you can mesh it manually, know about it watch our tutorial video: ruclips.net/video/8_osCXZjv_g/видео.html
Sir, thank you so much for presenting such a wonderful tutorial. Can you please recommend a book learning Fluent for beginners?
Ansys fluent theory guide and ansys fluent user manual is the best sources for a beginner.
@@AnsysTutor
What is the order in which I must start watching your videos and what must be the last video I must watch to understand them completely ?
Please make playlist out of the videos in that order.
@@AnsysTutor How can I have access to them? Thank you for the videos.
Sir, to learn CFD analysis what are things that I need to study first, and is it necessary to go through the playlist to learn the basics
You need to have basic understanding of fluid mechanics. Our every tutorial video has been made with basic steps. You can start with tutorials for begineers.
how do we get the verification for the flow to be turbulence using reynolds number ?
You can add the Reynolds number option from the datafile quantities in fluent to observe the Reynolds number variations.
Thank you for the wonderful lecture!
The couple/pseudo-transient was selected in the method section.
Is that required for the steady solver with the rotation moving wall boundary?
If I choose the simple solver, is it wrong?
Try to use the Simple method and see the difference. You would not get much difference.
For some reason, i cannot use the axisymmetric algorith for the meshing. Does someone know why?
Are you using latest version.? If yes then there is a glitch in the software regarding this. You should do the same model again in another file to get the Axisymmetric algorithm option.
Very helpful.. thanks sir..❤️
You are Most welcome.
Hi. Thank you for the great video and I learnt a lot from you! Anyhow, I'm currently venturing into "cutting transport" simulation in petroleum engineering background. The concept is almost similar to this video (rotating drill pipe act as inner cylinder and rock formation wall act as an outer cylinder), but, the annular space will consist of viscous drilling fluid and cuttings (crushed rock/sand or solid particles). Can you give me tips or direction on how to perform this simulation? Your kind response is much appreciated! Thank you
I think You need to model this using the multiphase modeling with dynamic meshing.
OK, thanks
Hi hazim, me also i work for hole cleaning study by using cfd simulation, Can i contact you
can u add a playlist learning each step of ansys on its own especially the different methods of mesh and how to select the best method
Hey Ansys Tutor! I really enjoy your videos because they are so informative. I had a project that I was working on and was hoping you can point me in some direction with it.
I am doing Fluent simulation for finding diffusion coefficients for melt flow in horizontal capillary tube. I know how to make the geometry, but I am confused on how to start the setup process. The model has to also have natural convection and mass transfer concepts involved.
Is it a melting process or molten metal flow problem.
@@AnsysTutor Molten metal flow problem.
What changes to boundary conditions(velocity etc) do I need to make if I use oil instead of water?
You dont need to change any Boundary conditions.
can you please upload some tutorial regarding polyflow extrusion and blow molding.. thanks for the tutorial helped alot
Will try to make tutorial on that module.
Thank you for this tutorial. What if there is no inlet and outlet. Water already exists in the annular space between the cylinders. The inner cylinder is rotating and the outer cylinder is stationary. In that case, will I follow the same procedure as this tutorial except for there will be no inlet and outlet boundary conditions? Is that correct?
Yes , you can follow the same procedure.
best teacher for me!by the way,which version of ansys do you use ,please?
Thank you , ANSYS 20 R1 has been used for this tutorial
Thanks you for this tutorials
Most welcome.
why did you use k-omega model for this?
Here the near wall regions plays a vital role ,as the wall boundary itself in rotation. K omega turbulence model is best suited for such type of problems.
Hello,
Can you suggest me a good research paper with which I can compare the results that you got from the above simulation...Thank you so much
I have not taken any reference from any research paper.
@@AnsysTutor Is there any relevant paper you can suggest ?
suppose the inner cylinder surface is hydrophobic. then can we apply % slip on inner rotating cylinder.
Yes, for that you need to enable turbulent model.
hey fav teacher, see you havent been uploading lately lol, how about some hypersonic flow to make it up, a sr71 lol
Will try to upload new videos soon. Thanks for keeping your eyes on our channel. 🙏
@@AnsysTutor sure thing, I will be waiting
Please make a video on Swirl Flow in a beaker having water in the beaker with a magnetic stirrer. First without any hindrance in the beaker, then with hindrances in the beaker(like semi-circular, triangular, and rectangular). Thanks.
Thank you so much sir
You are Most welcome.
Hey, Is there a way to have a solid object rotate, and then return in the opposite direction? I'm attempting to model a flapping wing and the interface seems to limit the moving walls to a single direction / constant state of motion. I'd love some help! These tutorials helped me a lot so far in setting up the meshing and boundary conditions, I'm just hung up on getting the motion of the wing to be modelled accurately.
That might be possible if you use the UDF method.
@@AnsysTutor Yes! I have seen videos on people utilizing the UDF method, do you happen to know a good resource that explains the functions or how to create one with examples? I'd appreciate it a ton!
what if we put a constant heat flux on the external cylinder in order to extrapolate the heat coefficient h of the model?
If you want to calculate the convective heat transfer on the outer surface you need to create a fluid enclosure over these.
@@AnsysTutor Thank you very much for the answer
Thankyou for this video! 🔥 Can I use ansys for analize the back pressure of exhaust system design for the marine diesel engine?
Yes, you can use it.
I want to add radial acceleration of magnitude 9.81 m/s^2, away from the centre for simulation of annular space between two concentric discs, how can I add ?
You need to put this by the help of named expression option.
@@AnsysTutor but how, can you give me one e.g of expression for the above value 9.81. please
Dear Sir, i need your help regarding giving conditions in heat transfer between different shaped pipe (example SQUARE PIPE, REACTANGULAR PIPE,HEXAGONAL PIPE) and plotting various chart like velocity, pressure, friction foctor,wall shear
please share the details on ansystutor7@gmail.com . if possible will try to help you in this.
why are we using sweep(axisymmetric) instead of face meshing
That creates a better meshing throughout the length than face meshing which creates uniform cells on that specific face only.
Hi sir, are we seeing the particles moving between the solid area of the inner and outer surface. I'm sorry if it's a too basic question I'm a beginner. Why is the streamline passing through the solid portion?
That is not solid area, that is the fluid region.
The region we selected is not solid. It can look like solid because we created a cylinder. But here in fluent this is the portion where fluid flows.
Thank youuu
can we simulate two different fluids flowing over extruder
Yes.
@@AnsysTutor can you please make a tutorial when two fluids are mixing like in a grinder
Is it possible make a simulation ( video ) that explain the use of Ultrasonic for improving heat transfer in a shell -tube heat ex-changer pls. ?
Are you using ANSYS-FLUENT as a licensed software?
I have used an academic version license.
I want to perform a boolean subtraction operation..?? But there are some issues. How to resolve those.
The error shows " Operation would result in non mainfold bodies
It means such operation would create a discontinue in geometry. Every geometry should be continuous for the analysis to proceed.
@@AnsysTutor for the external fluid flow analysis we need to subtract the main body from the enclosure. Isn't it?
sir thank you so much for such a wonderful lecture. can you upload a tutorial regarding leakage analysis in pipeline gas flow using pressure based solver
Will try to make a tutorial, before that we need more information regarding such type of simulation, if you have any reference or research paper then please send us on ansystutor7@gmail.com
Pls do analysis of PCM using vof method
Will try to make a tutorial
Computational Analysis of Doping of Silica During Sintering karni h mujhe kaun sa analysis system use karna hoga.
if there would be fluid flowinside how can i generate an hexa mesh? thnks
In the method, you need to insert hex dominant method for that fluid domain.
Hi, I still new with ansys software, can I change the particle size of the streamline? If can how?
You can change it in symbol tab of streamline panel.
Hello sir, thanks for the videos. I have just found your channel.
Is it okay if i spend my time starting this playlist? I have no background in Ansys, is it okay if i just start directly from this playlist?
ANSYS Tutorials For Beginners: ruclips.net/p/PLykANdmho34xuMaku22umA1xP6vidDfIN
Start with these tutorials.
@@AnsysTutor thanks sir. may i ask how to open design modeler? it wasn't explained in that 1st video in that playlist...
Thank you so much, can you upload a video about vortex-induced vibration
Sorry, dont have expertise on such simulation.
Thanx
i cant find algorithm option to select the axisymmetrical
This option is available only in latest versions.
sir please suggest, how to make strong command on meshing part in ansys.....how to get awared about all the things related to meshing.
I would recommend you to go through ANSYS Meshing manual pdf to get all the information regarding meshing in ANSYS. If you want further better meshing you can study the ANSYS ICEM CFD package .
@@AnsysTutor How can I have access to them? Thank you for the videos.
sir, are we able to study the flow structures and heat transfer performance?
Yes. You can enable the heat transfer by enabling the energy equations.
@@AnsysTutor how bout the flow structure
I am running the most recent version upon posting this. Should our results be identical to yours? Specifically for my case, I had the same volume, but I had a different minimum volume. Mine 8.933508e-09 vs Yours 4.240946e-10.
Mesh is different so results and minimum volume may vary.
hello .. thanks a lot for this useful tutorials . I have 19.2 Ansys version .. In sweep Method ; Defenition sublist commands ; i do not have Algorithm command !!??.. any help will be appreciated pls.
This option is only available in latest versions, for older versions use the split method as shown in the below tutorial
ruclips.net/video/8_osCXZjv_g/видео.html
@@AnsysTutor Thanks a lot for your kind reply .. I'm just a beginner in this field and try to follow your videos .
for this which ANSYS student version is required
You can do it in any version. Only the meshing part is different which can be done in ANSYS 19 R1 and higher
Thanks you for this tutorial.....could you also suggest, how to proceed if fluid is striking at the midway of the length of cylinder??
The similar procedure, only change is the flow direction.
@@AnsysTutor can you do a video on CFD of Pelton turbine?
Excellent tutorial! I was able to perform everything but my animation just stops and lags. Please help me if there is a fix..
there might be a problem with the solution process.
Sir, I followed all the step from your video, but the result that i get is different. May I know why will this happen? I'm new user for Ansys fluent. Hope you can solve my problem. thank you in advance =)
What is the difference that you observed.
@@AnsysTutor the different start after meshing. the value of volume, area, mesh quality etc were different.
It might be due to a different meshing. Different versions have a little different meshing approach. That might have caused the change in meshing.
Where can I see this flows application??
In some chemical industries, such type of flow mixing is applied
I also wanted to know the fluid pattern in a rotating cylindrical container. Could you make a video on that too ?
Please share more details about that. Is it similar to this tutorial?
@@AnsysTutor Kind of. Its like liquid(water) kept in a container(bowl/glass) and the container is rotated about its own axis.
Like we have swirl machines that create a vortex or tornado in a fluid
For such case you need to select multiphase model to observe the vortex.
@@AnsysTutor Thank you
the inner element size is equal to the outer part ..so why we add two mech sizing ?!
Its required to distribute the cells uniformly
Can we use the same setup for both rotating cylinder?
Yes.
Can you please do a Vortex Induced Vibration simulation. I am needing it in my reasearch but all tutorials i found was only about 2d simulation of vortex shedding. Hope you notice this thank you.
Sorry, cant help you in that.
Great
how can we simulate a 3d rotating airfoil ?
You need to use dynamic meshing in it.
@@AnsysTutor thanks
I do it, but interfaces penetrate each other
how to add grid lines in workspace?
Please describe a little more about it. Are you asking about the blocking method as in case of icem cfd or anything else.
I want to simulate the effect of a rotating propeller downwash on a spray nozzle mounted under it. Can you suggest how to approach this please. Thank you
You need to use dynamic meshing for such kind of advanced simulation.
@@AnsysTutor OK thanks
hi do you know how to set up the fluid in a carburetor? I don't really know how to specify the interaction between air and fluid in that condition,thank you
sorry Ian, we have not worked on such simulation.
No explanation of the steps. It is just an enumeration of commands to follow. Sorry sir, not good.
Sorry Orlando. We had tried our best to provide a good tutorial demonstration for all as per our knowledge and experience. We will try to improve.
sir iam getting an error when clicking results,its showing application failed to connect.Iam using 2020R2 student version.Please help me
At first save the fluent after the calculations get complete ,then open the cfd post results.
@@AnsysTutor sir i tried it,but still error persist
Hey, what is minimum volume and maximum volume and why does minimum volume can't be negetaive
These are meshed cell volumes. If negative then it means there is an overlapping between meshed cells.
@@AnsysTutor ok , thanks
How can I download free fluent? Is there dicount for student?
You can get student version for free. Visit ansys academic software website.
i have hollow cylinder . inner wall subject to heat flux . Can i moving outer wall?
Yes, you can move the outer one.
Excuse me,
Is there any teaching about fluid-structure coupling?
We have an one way Fluid structure coupling tutorial.
@@AnsysTutor Thank you so much.
Hi sir...
Please can you help me in draw heat sink
Please share the details , ansystutor7@gmail.com
After right click on mesh , insert the method tool is not showing to me..plz anybody tell me what to do??..
License might not be available. Restart the program and try again.
Is Ryzen 5 4600H with Nvidia Gtx 1650 good for Ansys, Solidworks, Openform, Hypermesh, Ansa? Any problem in that? Reply fast
Sorry, I have no experience on such. you should see the system requirements for all these software version to get information about whether the graphics card will be compatible or not.
Should be good
There is no algorithm command in box
Please help
which Version software are you using
great tutorial but why and what is with this annoying background music
Will try to add some good music.
@@AnsysTutor you don’t need to add any music at all. The content is great. That will do just fine
Sir i want one help in u bend pipe that how can i find mass flow rate variation at different keresone and water at different points in (litre per mint) ... Pls sir kindly reply me or can i mail you ?
You need to create a polyline to see the variations in chart.
ruclips.net/video/pav5rnq2jhk/видео.html here is a tutorial for you to know how to create the polyline.
You can send mail on ansystutor7@gmail.com
@@AnsysTutor Thanks you sir
Hello sir , i need your help
Yes, please ask
@@AnsysTutor I have my thesis project, spiral finned tube Super critical carbon dioxide , but i do not know how to setup its thermo physical properties , can you help me to make my project , i will pay you for it , please
Calculation me kuch zyada hi time lag raha he .