dear sir do u know could fluent handdle mass transfer from wet-solid to hot gas(for example: in fluidized bed dryer)without using of UDF? regards masood

there is not such a sir here but a bunch of people helping each other, you will get better results with UDF for a FBD, read the user manuals they're spread all around the web.

dear someone!(or sir!) i said without UDF!is it impossible without UDF? regards masood

I modeling a flow through two blades revolving in a cylindrical geometry, the fluid is note rotating, the blades are used just as scraping of the walls in interior of cylinder, when I have a strong shearing, what do you suggested choose as solution of this problem, Reference frames, moving wall or sliding mesh?

Thank you.