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Aerofoil Transonic flow

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Old   January 28, 2023, 06:11
Default Aerofoil Transonic flow
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Hi! I've been trying to simulate transonic flow (0.8 Mach) over a naca0012 but havent been getting any reliable results.

would the mesh that I've attached be able to simulate transonic flow well please? I found a picture of it, but there seems to be no tutorials on how to generate it sadly

Can someone give me some tips on this too please, very new user of Ansys Fluent

BC4BDA4E-6473-408D-8159-408F18856EB6.jpg

Thanks in advance
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Old   January 28, 2023, 21:00
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Probably, but you should show the mesh around the airfoil, we do not care about the far field
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Old   January 29, 2023, 10:38
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Hi LoGal, sorry that’s the only image I have of the mesh.

I managed to generate the parabola geometry, but am really struggling with the actual meshing? Can you suggest where to start with meshing like that please? Should I start with splitting up the geometry using lines maybe first?

Thanks
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Old   January 29, 2023, 16:58
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I have no clue how the mesh looks like near the airfoil. Probably it is fine. But maybe not. I don't see it.
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Old   January 29, 2023, 20:02
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xiaolong li
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Quote:
Originally Posted by Transonic View Post
Hi! I've been trying to simulate transonic flow (0.8 Mach) over a naca0012 but havent been getting any reliable results.

would the mesh that I've attached be able to simulate transonic flow well please? I found a picture of it, but there seems to be no tutorials on how to generate it sadly

Can someone give me some tips on this too please, very new user of Ansys Fluent

Attachment 93148

Thanks in advance
Hello, about this case. There are some open papers you can reference.Also, you can find the nearly same cases in youtube.
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Old   January 30, 2023, 04:51
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Hi xiaolong.li and LoGal, thank you Xiaolong for the idea on using papers, I actually managed to find this close up.

I still am unsure about how actually generate a mesh like this (both far field and close to the aerofoil), Iím not managing to get it to look the same.

This is what I think they use close to the aerofoil: Inflation

But then for the far field part, how do I generate a mesh like that please? Could you maybe suggest tutorial that covers this please as they seem to be only showing the setup on YouTube not the geometry or mesh bit
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Old   January 30, 2023, 06:52
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ah I see. Look for ICEM airfoil tutorials. C grid or O grid.
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Old   January 30, 2023, 11:48
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Hi again, do you think it could be made in Andy’s Fluent design modeller please? I haven’t used ICEM before
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Old   January 30, 2023, 14:16
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design modeller modifies the geometry, but is not capable of meshing. Something similar can be produced with the ansys mesher in the workbench.

But tbh it really takes 1-2 days to learn how to create meshes for simple geometrical shapes such as an airfoil, no matter the software. In my opinion you are wasting your time thinking too much while you should get into action
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Old   January 31, 2023, 07:51
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Hi, you can see this video.

https://www.youtube.com/watch?v=nzvEvLCxOss
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airfoil 2d, ansys fluent, mesh and grid, transonic flow, workbench

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