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How to define Fixed value with UDF?

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Old   July 19, 2017, 04:25
Default How to define Fixed value with UDF?
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Masoud Ravan
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Hi everyone
I have a vortical flow with known stream function, as you know I have to use fixed values to define velocities of cells. but the is that velocity components are function of x and y...and I do not know how to implement variable velocities....???
This is my stream function that could be used for deriving velocity components:
PHI=1/pi*(sin^2(pi*x))*(sin^2(pi*y))


appreciate your help...I'm really confused(
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