Modify velocity profil using udf or without

diamondx · July 10, 2012, 14:49

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

flotus1 · July 10, 2012, 17:27

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)

July 10, 2012, 14:49	Modify velocity profil using udf or without	#1
diamondx Super Moderator Ghazlani M. Ali Join Date: May 2011 Location: Tokyo, Japan Posts: 1,385 Blog Entries: 23 Rep Power: 29	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 __________________ Regards, New to ICEM CFD, try this document --> https://goo.gl/KAOIwm Ali

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July 10, 2012, 17:27		#2
flotus1 Super Moderator Alex Join Date: Jun 2012 Location: Germany Posts: 3,427 Rep Power: 49	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)