[Rajaero]

Hello guys..
i am doing fluid and solid coupled interface problem to find out the heat transfer coefficient. i have solved the case and got h value.
But,
There are two interface was created by fluent. so if want to calculate h value then which i need to choose?
for example,
Area-Weighted Average
Surface Heat Transfer Coef. (w/m2-k)
-------------------------------- --------------------
all-solid-contact_region-trg -14.667882
contact_region-src 41.948711
in this which interface value i should consider? or i need to calculate the net value?


is reverse flow becuse of following reasons?
1.mesh quality
2.outlet domain is too short.
3.chage pressure outlet to out flow condition (can i set outflow condition if ideal gas was used?)

Reverse flow will affect the solution or it only affect the convergence rate?

thanks in advance...