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September 3, 2021, 06:05
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Negative Enthalpy and wrong temperature
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#1 |
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Member
Horst van Gras
Join Date: Oct 2018
Posts: 44
Rep Power: 6  |
Hi,
I have a persistent problem in openfoam. In the transient part of my simulation I have a negative enthalpy given by thermo.he(). Is this physically possible? I thought the enthalpy should be calculated by  . Therefore the local enthalpy in cells should be always positive.Can somebody tell me where is the source file for calculating the sensible enthalpy in openfoam? Hence this negative enthalpy I see a drop in temperature below 293K, which for a simple, convection problem should definitely keep above 293. I'm using second order schemes Gauss linear with a non-orthogonal testgrid. Average orthogonality: 0, max: 1e-6 Thx for any help |
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| Tags |
| convection, enthalpy, physics, temperature |
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