[oilsok]

hi

now i trying to solve a mass & heat transport problem.

activate the species. but not activate reaction.

fluid is air and helium.

both the material property. density : ideal gas

cp : polynomial, viscous: polynomial , thermal conductivity : polynomial

and the mixture-material set

density : ideal gas, cp : mixing law , thermal conductivity : ideal gas mixing law
mass-diffusivity : dilute-approx (polynomial[ I have binary diffusion coefficient table])

but i don know thermal diffusion coefficient. (kinetic theory???)

Now the problem solver to calculate the heat transfer calculations are not doing.

When I calculate the heat transfer = very divegence.

In my opinion, non-kinetic theory of direct input quantities talks What do you think?

[oilsok]

divergence problem with energy equation

my mesh is very long cylinder

so...

aspect ratio is very poor.