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-   -   Modify velocity profil using udf or without (http://www.cfd-online.com/Forums/fluent-udf/104480-modify-velocity-profil-using-udf-without.html)

diamondx July 10, 2012 13:49

Modify velocity profil using udf or without
 
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:
http://upload.wikimedia.org/wikipedi...rYVelocity.jpg
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:
http://www.pa.uky.edu/~rplebeau/cfd/.../schematic.JPG
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

flotus1 July 10, 2012 16:27

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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