[mauz]

hello everybody,

in an homework regarding CFX I'm asked the following:

Laminar incompressible flow is modeled in a problem where an additional physical scalar φ should obey following equation:

φ'_t = Γ(φ''_x+ φ''_y+ φ''_z)

possible replies:
• It is possible to implement the model using CFX if Γ=Γ(x,y,z)
• It is possible to implement the model using CFX only if Γ is constant
• It is not possible to implement the model in CFX

I think first one is the right answer, I don't see any reason why it shouldn't be possible to implement a variable Γ in space, but probably the easiest solution is the wrong one ;-) Maybe some of you with more experience in CFX can give me reason of this limitation (if the right answer is not the first).

beest regards