codedMixed temperature in compressibleInterFoam

JulioPieri · December 13, 2024, 15:54

Dear all,

I'm running a simulation (high pressure gas injected into water) in which T varies at the inlet with a codedMixed BC, with OF2212. The coded part itself is ok, and the T value is updated correctly.

However, the T.gas field is not updated with the coded T during the simulation - it is kept constant as the initialized value. This leads to a wrong rho, thus changing the inlet mass flow rate and giving wrong results. Only when I stop and resume the simulation the T.gas field is updated to the proper value of T (which was freshly calculated from the coded BC at the begining of the run, during 'mixture' construction).

Did anyone face problems like this one? Is there any workaround? I believe the thermo1 and thermo2 objects should be updated form T every timestep, but for some reason it isn't.

Thanks!

JulioPieri · December 16, 2024, 13:23

For those interested in something similar, it seems to be a bug with ESI OF. Running in Foundation v11 did the trick.

December 13, 2024, 15:54	codedMixed temperature in compressibleInterFoam	#1
JulioPieri Senior Member Julio Pieri Join Date: Sep 2017 Posts: 109 Rep Power: 9	Dear all, I'm running a simulation (high pressure gas injected into water) in which T varies at the inlet with a codedMixed BC, with OF2212. The coded part itself is ok, and the T value is updated correctly. However, the T.gas field is not updated with the coded T during the simulation - it is kept constant as the initialized value. This leads to a wrong rho, thus changing the inlet mass flow rate and giving wrong results. Only when I stop and resume the simulation the T.gas field is updated to the proper value of T (which was freshly calculated from the coded BC at the begining of the run, during 'mixture' construction). Did anyone face problems like this one? Is there any workaround? I believe the thermo1 and thermo2 objects should be updated form T every timestep, but for some reason it isn't. Thanks! Last edited by JulioPieri; December 13, 2024 at 17:28.

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December 16, 2024, 13:23		#2
JulioPieri Senior Member Julio Pieri Join Date: Sep 2017 Posts: 109 Rep Power: 9	For those interested in something similar, it seems to be a bug with ESI OF. Running in Foundation v11 did the trick.