Learning Forum

[唐靖博]

For the pressure-based solver Tref is 298.15K except for PDF models. For the density-based solver Tref is 0K except when modeling species transport with reactions. But I found that the enthalpy of oxygen is not zero at the temperature of 298.15K when using pressure-based solver.

[Amine Ben Hadj Ali]

If species model is active you will need to check the value of formation enthalpy: if this is not zero you will have a non zero enthalpy.

[唐靖博]

Oxygen is an elementary substance whose standard enthalpy of formation is zero.

[Amine Ben Hadj Ali]

Then please add a screenshot of the Flux Report for Heat and the inlet boundary.