hi friends, i am working on the duct problem. THe boundary condition i am using are total mass flow at inlet and static pressure at inlet. In side the duct there is a porous subdomain. I am getting the solutio for the case in which prism layers are not generated but finding problem in the case with prism layer at outlet. i know that the prism layer geneartion should help to achieve convergence, may be i am using the right way to generate prism layer. thks for response.

Do the icem tutorials...

Your last sentence seems to refer to hex mesh.

I don't think prism layer help stablising the solutions but it is neccesary to improve the solution accuracy.

CFX mesher may create a better prism layer but it depends on your geometry anyway.

Thks joe, i had done tutorials. In tutorial problem also, i found that it does not create tet mesh in the domain and prism layer close to wall at one shot, the problem work out only if we genrate the prism layer after genarating the tet mesh and saving it. waiting 4 ur reply