[HorstvanGrass]

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