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[ANSYS Meshing] Reducing mesh size along z-axis for 3D conjugate heat transfer problem

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Old   May 9, 2020, 14:02
Default Reducing mesh size along z-axis for 3D conjugate heat transfer problem
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Anthony
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Hi everyone


I am attempting to model a single fin of a heat sink, surrounded by air, as a conjugate heat transfer problem. As it is only a single fin, my domain is much larger in the x and y directions than it is in the z.


My problem is that I cannot get a fine enough mesh size in the z-direction to capture the boundary layer without making my entire mesh tiny, which I cannot really afford to do.


I have tried using edge sizing with hard behavior, with multizone, tetrehedral and even hex-dominant methods, but the size doesn't permeate through the whole domain. If I use inflation, ANSYS I can't the overall thickness to what I need it to be.



Is there a setting I am missing or is this approach completely inappropriate? I can upload a picture of the domain if it will help.


Cheers!
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Old   May 9, 2020, 16:50
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Go ahead with that image
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Old   May 9, 2020, 23:55
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Quote:
Originally Posted by AtoHM View Post
Go ahead with that image


This is the domain I have, please let me know if there's anything else that will help
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Old   May 10, 2020, 03:51
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domainall.png


It appears that my previous reply didn't link the image properly, hopefully this works, thanks
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