[Ozora]

I have a geometry like a fan inside the room circulate the air. One inlet and one outlet exist in the room but Fan doesnt exhaust or inlet air. Its only circulate air in the domain.

I have a question about fan boundary condition, I dont know anything about source terms,so is rotational speed enough ?

Also about rotational axis origin and direction, is rotational axis origin mean, if its not on the origin for example is it (1500,900,100 ) ? And about vector, should i input rotational direction or normal to fan surface ?

I hope i could tell my problem,
Thank you very much,