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Mikka August 5, 2007 21:55

Pressure gradient in particle simulation
I am dealing with a particle simulation program and facing a problem now. My model is a channel flow(poiseuille problem) while the fluid is enduring a pressure gradient. Instead of imposing pressure gradient on the whole flow field, I add a constant force on each particle. Are there some problems in that simplification? There are supposed to be some because I failed several times in getting the value of stress. Thx!

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