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Modify velocity profil using udf or without

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Old   July 10, 2012, 13:49
Default Modify velocity profil using udf or without
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Ghazlani M. Ali
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hello everyone,
I wanna know if this is possible using Fluent:
Can we force fluent to change a velocity profil and make it more look like this:

What i'm trying to do is actually to simulate the presence of plasma actuators...
Thanks a lot for advance.
More about plasma actuators are here:

I know fluent is made to solve navier-stockes equations, i majoring in fluif mechanics, my knowledge in electricity is very limited. What do i need to simulate actuator ? maxwel equations ??? can we implement them via UDF ??
Thanks a lot again
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Old   July 10, 2012, 16:27
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Defining velocity profiles with a UDF is quite easy.
The UDF manual has all the information you need.

Concerning the plasma actuators: this is the first time I heard of this, but as far as I can see, it simply introduces a momentum source to the fluid.
Again, such a source can be modeled with a UDF (search for DEFINE_SOURCE in the manual)
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