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buoyantBoussinesqPimpleFoam - false result in the corner |
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#1 |
Member
Grivalszki Péter
Join Date: Mar 2019
Location: Budapest, Hungary
Posts: 39
Rep Power: 7 ![]() |
Hi,
I'm trying to simulate a simple heat transfer case (getting to know the software for further researches) with buoyantBoussinesqPimpleFoam. Unfortunately, I have some numeric error in the results (pictures attached). Why is this weird field in the corner? How can I get rid of it? Thank you in advance! Griva Last edited by GrivalszkiP; September 21, 2019 at 05:19. |
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#2 |
Member
Eren
Join Date: Aug 2018
Posts: 86
Rep Power: 9 ![]() |
As a novice myself, you need to share your files too. All I can assume is you have way too course mesh. I modified buoyantBoussinesqPimpleFoam and used many times and never had this kind of issue.
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#3 |
Member
Grivalszki Péter
Join Date: Mar 2019
Location: Budapest, Hungary
Posts: 39
Rep Power: 7 ![]() |
Thank you, but I don't think so... Anyway, here are my files:
U PHP Code:
PHP Code:
PHP Code:
PHP Code:
PHP Code:
PHP Code:
PHP Code:
PHP Code:
PHP Code:
PHP Code:
PHP Code:
PHP Code:
PHP Code:
Last edited by GrivalszkiP; September 24, 2019 at 08:33. |
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#4 |
Member
Kirk Jarvis
Join Date: Mar 2009
Posts: 31
Rep Power: 17 ![]() |
The boundary conditions for the outlet appears to be a problem.
for p_rhg try something like: outlet { type fixedValue; value $internalField; } for U try something like: outlet { type inletOutlet; inletValue uniform (0 0 0); value uniform (0 0 0); } for T try something like: outlet { type inletOutlet; inletValue $internalField; value $internalField; } You should get good results with the above recommendations. |
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#5 |
Member
Grivalszki Péter
Join Date: Mar 2019
Location: Budapest, Hungary
Posts: 39
Rep Power: 7 ![]() |
Thank you, it's working!!
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Tags |
boussinesq, buoyant, corner, error, heat |
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