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need to get sufficient results in 3D with TET |
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April 10, 2013, 10:32 |
need to get sufficient results in 3D with TET
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#1 |
Member
Dmitry
Join Date: Nov 2011
Posts: 45
Rep Power: 14 |
I need your advice.. My 2D HEX model and experiment are in agreement.
Nevertheless I need 3D. I am not good in ICEM to make 3D HEX (I have lots of freaking steps in geometry..). So I did 3D TET, results in numbers are not matching with 2D HEX.. but I would say If to refine the mesh, the results 3D TET will match to 2D HEX (I did try it already, with an increase of elements the results getting closer to 2D HEX). But, the way to refine TET is not good for me I already have 2.1M TET.. so if I put in *.def mesh adoption option.. will it helps to safe computing time to get results close to 2D HEX..? any advice are welcome thanks for your time. Thanks. P.S. btw: i do model supersonic flow, with max M~2.5. Last edited by imnull; April 10, 2013 at 15:00. |
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April 10, 2013, 11:43 |
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#2 |
Senior Member
OJ
Join Date: Apr 2012
Location: United Kindom
Posts: 473
Rep Power: 20 |
21 million mesh!!? Are you sure?
You don't have to refine the mesh at every corner. Have a look at your 2D results and understand where you have larger gradients, and try to refine only there. Or, try mesh adaptation. OJ |
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April 10, 2013, 12:21 |
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#3 | |
Member
Dmitry
Join Date: Nov 2011
Posts: 45
Rep Power: 14 |
Quote:
pls take a look on results of 2D HEX Untitled1111.jpg as seen I have 5 areas... so, at each freakin corner.. hope you see the problem with using TET now.. my run with mesh adoption is still on (2 days already).. converging process is ok (i do control it manually). will report on results.. do you have an experience to work with supersonic flow (I have some more @stupid@ questions)? |
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April 11, 2013, 09:57 |
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#4 |
Member
Dmitry
Join Date: Nov 2011
Posts: 45
Rep Power: 14 |
calculation with mesh adaptation is done... yes, adaptation helps.
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