Negative initial temperature error

keda xu · August 26, 2021, 17:38

SonicFoam, k-epsilon model and snappyhexmesh is used for 3D geometry. No matter how to change the mesh number, maxCo and delta T, the error still exists. Temperature limit is added in fvOption, but it didn't work. Anyone knows how to fix the problem?

janibo · August 27, 2021, 01:05

Hello keda,

does sonicFoam read the fvOptions file? You can check that at the begining
of the log file.

Otherwise check your boundary conditions and the mesh quality
(for this use the full check; checkMesh -allGeometry -allTopology)

keda xu · August 27, 2021, 02:03

Thanks, janibo. The problem is solved by changing the maxCo to 0.5 with more mesh.

August 26, 2021, 17:38	Negative initial temperature error	#1
keda xu New Member BC Join Date: Jul 2021 Posts: 5 Rep Power: 4	SonicFoam, k-epsilon model and snappyhexmesh is used for 3D geometry. No matter how to change the mesh number, maxCo and delta T, the error still exists. Temperature limit is added in fvOption, but it didn't work. Anyone knows how to fix the problem?

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August 27, 2021, 01:05		#2
janibo New Member Niklas Boehnke Join Date: Jul 2021 Location: Lübeck Posts: 12 Rep Power: 4	Hello keda, does sonicFoam read the fvOptions file? You can check that at the begining of the log file. Otherwise check your boundary conditions and the mesh quality (for this use the full check; checkMesh -allGeometry -allTopology)

August 27, 2021, 02:03		#3
keda xu New Member BC Join Date: Jul 2021 Posts: 5 Rep Power: 4	Thanks, janibo. The problem is solved by changing the maxCo to 0.5 with more mesh.