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Prescribe vorticity as a nodal boundary?

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Old   September 5, 2012, 10:32
Question Prescribe vorticity as a nodal boundary?
Kisorthman Vimalakanthan
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Dear all,

I was wondering if its possible to specify vorticity boundary conditions to specific nodes within the domain in CFX?

Basically I would like to model a vortex generator without the actual geometry instead prescribe the effect of the geometry at the nodes, where the vortex generator will be. May be using primitive regions? or implementing immersed boundary condition?

Please advice on literature that have done such a thing or methods such as user defined function that may help me to achieve this. Any help is greatly appreciated
Kisorthman Vimalakanthan
Dept. of Power and Propulsion
Cranfield University

Last edited by k.vimalakanthan; September 5, 2012 at 11:29.
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Old   September 5, 2012, 13:35
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Felipe Gobbi
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Maybe a momentum source? Have you tried this? There's some threads here about modeling momentum sources as interfaces and etc... I believe it follows the same strategy that you're trying to apply to your problem.
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cfx, node boundary, udf, vorticity

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