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Old   May 25, 2006, 03:26
Default Boundary Conditions
James Pattison
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I'm trying to setup a UDF in Fluent 6 that changes the boundary type depending on the incident particle condition. I'm looking at particle velocities through a supersonic nozzle using Disrete Phase Modelling. I want to set a boundary condition such that the incident particles are reflected if their velocity is below a threshold velocity, or trapped if they exceed it. Is this possible?


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Old   May 29, 2006, 10:17
Default Re: Boundary Conditions
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Yes, this is possible, and should not be that hard to do either. You will need to write a UDF and use as your DPM boundary condition at the wall. The examples available in the UDF Manual will give you a great hint of how to write it.

Good luck!

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