Error during computing radiation factors for heat transfer

Numerical methods and mathematical models of Elmer
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hennig
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Joined: 12 Jun 2021, 20:51
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Error during computing radiation factors for heat transfer

Post by hennig »

Hello,

I'm making first attempts with heat transfer via radiation and started with a quite simple case comprising two plates. One acts as a source and one as a sink.

Unfortunately, the calculation stops during computation of the radiation factors for heat transfer (see SolverLog.txt attached).

Can somebody help?

Best regards

-Carsten
Attachments
SolverLog.txt
(2.3 KiB) Downloaded 15 times
plates3.unv
(741.82 KiB) Downloaded 12 times
case.sif
(2.25 KiB) Downloaded 14 times
phopfgartner
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Joined: 23 Mar 2018, 17:51
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Re: Error during computing radiation factors for heat transfer

Post by phopfgartner »

Could this be the same situation as in viewtopic.php?t=5846 ?
Rich_B
Posts: 53
Joined: 24 Aug 2009, 20:18

Re: Error during computing radiation factors for heat transfer

Post by Rich_B »

Hello,

I downloaded your files, and changed the third line in case.sif from Mesh DB "." "." to Mesh DB "." "plates3".
I added the file ELMERSOLVER_STARTINFO containing 'case.sif'.

elmergrid 8 2 plates3 -autoclean
elmersolver

It ran to completion with the results shown in the picture.

Rich.
Attachments
plates3.png
plates3.png (43.31 KiB) Viewed 220 times
kevinarden
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Re: Error during computing radiation factors for heat transfer

Post by kevinarden »

ELMERSOLVER_STARTINFO containing the name of the sif file is a requirement for calculating radiation factors, but not for other Elmer solver runs.
hennig
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Re: Error during computing radiation factors for heat transfer

Post by hennig »

Dear Rich, dear kevinarden,

I followed the instruction from Rich and now the calculation works well.

Thanks a lot for your support.

BR
-Carsten
raback
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Re: Error during computing radiation factors for heat transfer

Post by raback »

Hi,

ViewFactors has not used the command-line argument that has been available for ElmerSolver for many years. Just fixed it so it should work better in the future.

-Peter
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