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how to apply constant velocity to particles during the simulation |
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January 24, 2014, 02:52 |
how to apply constant velocity to particles during the simulation
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#1 |
Senior Member
mohammad
Join Date: Dec 2010
Location: UK
Posts: 245
Rep Power: 16 |
Dear all,
I am simulating a domain with some particles moving in a certain direction during the whole simulation. My problem is to apply this constant velocity to the particles in the entire domain and during my simulation. Does anyone have any idea or suggestion? thanks |
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January 24, 2014, 03:47 |
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#2 |
New Member
Marek Chodorski
Join Date: Aug 2013
Location: Poland
Posts: 13
Rep Power: 13 |
Hi,
Have a look here - description is in polish http://feazone.org/readarticle.php?article_id=11 vx, vy, vz are wind velocity. If equation you solve is the same use Galerkin method with up-winding. Marek |
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January 24, 2014, 05:17 |
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#3 |
Senior Member
Join Date: Nov 2013
Posts: 1,965
Rep Power: 27 |
I could imagine a udf that looks like this:
Code:
DEFINE_DPM_SCALAR_UPDATE(fixedvel,cell,thread,initialize,p) { P_VEL(p)[0]=10.0; P_VEL(p)[1]=0; P_VEL(p)[2]=0; } Although I must admit that I find it difficult to believe that you really want to force the particles to always have the same velocity, and would advise you to take a step back and look at your physical model and the problem you are trying to solve. |
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