[Prince of Persia]

Hi
I want to enter the equation in CFX as boundary conditions.

Power law:
(U/UH)=(z/H)^p
UH , H , p : constant
UH=63 mm/sec
p=0.21
H=100 mm

If anyone can help me please reply to my post.
Thank You.

[Zigainer]

You can do it by creating an expression.

Let's say you name the expression "U_inlet":
and define the experssion as: "0.063 [m s^-1] * (z/(0.1 [m])^0.21"

Go to the boundary an enter to the the expression "U_inlet" to velocity