ANSYS Fluent Tutorial: Three methods of Defining Fluid - Solid interface for Conjugate heat transfer
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- Опубликовано: 11 сен 2024
- In this video, you will learn different ways of defining mesh interfaces in ANSYS fluent mostly for heat transfer applications. For more details on conjugate heat transfer simulations, please refer to this video:
• Conjugate Heat Transfe...
#ANSYS #fluent #CFD #tutorial #ansysmultiphase #ansyscfd #ansystutorials
My project hinges around this interface that was not cooperating. This tutorial saved me a lot of time. Thank you.
You are welcome. Please subscribe to our channel for more videos.
You have some real skills and experience in Ansys fluent, if you have any online course, I am sure many people would buy it. good job man
Thank you very much, it worked for us!!
We were trying to do a parametric analysis of a solid-fluid interaction but it was giving us problem of recorded-mesh operations (using the first method since we didn't know about others) and this problem would occour in random times, so we couldn't solve it with our journal. But since we used your third method, it stopped showing us the message for recorded-mesh operations and now we can automate everything.
Thank you again!
This tuttorial is incredible. Thank you for sharing.
Very useful information you have done in that fluid domain, you create the part(they have only fluid) in design modeller... So in fluent , you never give or see mesh interface...
Thanks, I like your tutorials. Keep up the good work
Excellent tutorial! Thank you very much!
In addition i can suggest a thing. In the third case (unified part for multiple bodies) mesh is conform (vertices-to-vertices), and single meshing rule is applied to all bodies in the part. And as all bodies is in single grid, this may cause too dense grid in parts, where it is not necessary. And sometimes need to apply spedial sizing mesh rules to separate bodies. Just my suggstions. But in general, mesing single part is best solution, as in this video.
very important video . it is full of info.thank you so much
Thanks a lot for this nice didactical tutorial !
Hi, thank you for watching and thank you for your comments.
Great Video, Can you tell if that non overlapping wall will cause any problem? If I have a non overlapping wall, then what should I give as its condition? Heat Flux zero or via system coupling?
excellent explanation. very very thx
Thank you for watching.
Thanks you a lot for sharing us these informations
You are welcome. Thanks for watching.
Awesome video
Thank you for watching. Glad you enjoyed it
Excellent video!!!
Thank you very much!
Thank you for the video. Only one clarification, how to create interface for components of different materials?
You create different objects, make them as one part. You can create name selection by selecting volume inside the DM and then in the fluent you can assign different materials to them. You can refer to this video: ruclips.net/video/Stp9SSj5j1U/видео.html
Good presentation and well explained. I have a doubt. Which one is more accurate? or all three works the same?
Thank you for watching and thank you for your comment. Accuracy should be the same. It is only ways of defining interface.
Thanks for the video ! Great
Very useful. Thank you!
Thank you for watching and thank you for your comment.
@@AdvancedEngineeringTutorials
What if i have to apply one of these methods to a 2D geometry? which one would you suggest?
@@francescomarcelli7672 Personally, I always use creating single part in design modeler so the interface would be created automatically in the Fluent. In this case, if the interface is not there, this can be a sign that there is a problem in the geometry, for example there is a gap or something like that. So I suggest using this method as your default method.
@@AdvancedEngineeringTutorials
Great, thank you. Your tutorials are very useful!
Very useful video!
Thank you for your kind comment.
Thank you, excellent video. I have a question, why i can't generate wall-shadow when i change the fluid to solid?
Hi ,
can u please help me ?
I have an issue with my project , and it is related to the video
Excellent work
Thanks for the video, very well explained :)
I usually use 'Imprints' as shared topology after forming a part in Design modular, which creates automatic contact regions in meshing (sometimes overlaps, which can be overcome). Is it a right way to do?
Yes, that will be a good way too. In my personal experience, merging them as one part and letting fluent take care of interfaces is the easiest way and you can find out any problomatic geometry if that does not work well.
In the second method. Where is Wall 4? Why there are wall 4 and wall 4 shadow at the boundary condition?
Hi there. Thank you for your tutorial. Btw, I have some questions.
1. Can we use the same box and differentiate the lower surface as solid? For example, the upper surface of box will have radiation while the lower surface will act as steel, the absorber for heat. And in between the surface is the fluid.
Or do I need to sketch another box which will act as steel absorber as the cube?
2. What is the difference between the radiation model and radiation in thermal tab of determining boundary conditions?
Thank you for your help!
All 3 methods doesnt seem to work for me, method 1 it said my interface is overlapping and cannot update. Method 2 and 3 doesnt seems to detect a contact region.
Thanks for the Video, Is it important which boxes considered as a Target bodies and which one as a contact bodies; Always Fluid domain should be target bodies?
Excellent video. I have a question. Which boundary condición can you suggest me for a interfase or contact between two volumes of the same fluid? Thanks for your answer and your videos, they're so cool
It depends on you application. But if you are just slicing your fluid region for example to make finer in one section. The interface should be internal in between which will make two fluids physically one single material.
@@AdvancedEngineeringTutorials Thank you.
Why do you have non-overlapping zones with te two fisrts methods? This affects to the final result?
How about fluid fluid? For example u have rotor and make rotating fluid domain around it with moving reference frame, and u have fluid around the rotsting domain. U want the rotating fluid to be able to penetrate the interface, what u should do?
Hello first of all very informative lesson, but here my question is: I have a large domain as a cylinder and a smaller cylinder inside of it. So the question is, how I will select and name of the outer domain. It is not possible as you have shown in the video since it is inside of the cylinder. please help me?)
Define name selections in design modeler or space claim.
Wonderful
Thank you for watching and thank you for your comment.
Excellent video. Thanks for sharing. I plan to start on method 2 to create my interfaces for my first conjugate problem. My one question is within my workflow I use DM for geometry and water volume generation and then Fluent mesh to create and save the mesh as I like the direct creation of polyhedral (2019R1). Then I import the mesh on Workbench. I noticed one time I could not do my conjugate problem as it told me I needed to define the interfaces on SpaceClaim (which I dont use). Do you think that me following your method on DM defining interface names first there and then meshing on Fluent will eliminate this problem? Thanks! (I will try anyway).
Thank you for your comment. Yes, if you use the design modeler and then do the meshing inside the FLUENT, it will work.
Just you need to assign all the bodies to a single part and also define all the name selections and boundaries in the DM. Let me know if you will need more info.
Thank for a very nice video sir
Sir i want to know about the actual meshing method of solid and fluid domain after providing contact surface.
Thank you for watching and thank you for your comment. You can check other videos in my channel for fluent meshing.
Hello there. Thank you for the very informative video. Just one question, does this method work if i want to create a structured block mesh inside a fluid domain with different mesh sizes. Will it work if i combine all blocks to one part at the beginning?
Currently i am doing conjugate heat transfer analysis in a heat exchanger. Can i apply this method in my project as well?
Thank you for your comment and thank you for watching, sure, it should work for any fluid/solid interface.
Thank you for sharing your Vedio, but I use the fluent 6.3.26, could you tell me how to set in this software, I remember we can set the coupled wall by the codes, could you help me ?
Thanks for the video. I am doing a dynamic mesh study about turbine, currently facing Interface zones overlap for mesh interface issue. Do you have any idea to overcome this?
Thank you for watching and thank you for your comment. Do you get this error during the meshing? If yes, it is your geometry, you need to clean up your geometry in SpaceClaim or other CAD software.
Thanks a lot
Could you help me?
I'm trying to simulate a piece of wood drying into a wind tunnel and i'm having problems with meshing.
How can i set the contact between the fluid zone and between the solid (set as fluid zone because it is a porous region with water inside)?
Thank you for watching and thank you for your comment. Could you please explain more about the problem? How do you create the porous media?
@@AdvancedEngineeringTutorials I set the cell zone condition for wood as fluid zone and then marked the option "Porous Zone". Set the porosity for this cell, and the porous material as wood (from fluent database).
I also set an initial fraction of water volume inside the zone (0.5) at the initialization, the heat transfer worked quite well creating a contour of temperatura, but the mass transfer doesnt work.
@@kkggff1 I see, unfortunately, I have not done much mass transfer simulations so I am not sure. I will try to see if I can address this issue.
Sir how to create meshing of complex geometry for conjugate heat transfer.
Thank you for watching and thank you for your comment. I would use Fluent meshing for more complex geometries.
Hi and thank you for this useful video.
I would appreciate it if you could answer my question in terms of solving a conjugate heat transfer problem.
I want to know is that possible to use the solar load model (in 3D) using the ray-tracing method when we have a solid zone adjacent to a fluid zone. You consider the solid zone is a transparent zone which the inside of that has meshed, does ray tracing consider the outer surface (this outer surface actually is an interface) of solid in the calculation of solar heat flux on the surface? For more clearness, if you add solar load using ray-tracing exactly in this example (innerbox-outerbox) that you showed, raytracing is ignored on the outer surface of the inner box as solid zone, since I need to calculate the conduction heat transfer through the glass part of my problem I really need to know how it is possible in the Fluent.
I would be thankful if you just give some tips about my problem ( conjugate heat transfer inside an aquarium with considering of glass thickness in order to see conduction through the glasses thickness - 3D)
And also this is my email for more collaboration and communication about this problem and paper: javada@civil.aau.dk (Thanks a lot)
Thank you for watching this video, could you please send specific description to the problem you are looking to solve to this email address? simpro2144@gmail.com
@@AdvancedEngineeringTutorials Thank you very much. I have sent my problem to your Gmail. I would be thankful if you could help me in this regard. Thanks again.
Hello my Ansys Fluent 2020 does not detected contacts even after following the boolean operation. I checked whether automatic contact on attach is checked. But even when I select create automatic connections, nothing happens. What could be the reason?
Thank you for watching and thank you for your comment. Are you creating a single part from all the bodies in the design modeler?
Good training. But ı am wondering that, ı want to link it to the static structural( ı am talking about one way fsı) which surface should ı apply the imported force in static structural? do ı have to define a domain on the body like wind surface or fluid interface similarly the fluent?
it's a big assembly by the way. I combined it as a one part. Think of that is the beam analysis. Thanks in advance...
Could you clarify more about the geometry you want to simulate?
İt a aluminum base solar mount structure,ı may share you images in private if its proper for you
@@OneArmedCrab Sure! That will be great.
@@AdvancedEngineeringTutorials Easy man easy ok :) it ain't problem ...
Hi , just i wonder if you provide private lessons about fluent specifically in ventilation in compartment , please if so drop your email
Thank you for sharing, can I add your Facebook account?