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bonny June 2, 2002 22:31

hi,all My problem is that there is a additional source in momentum equation. e.g, in u momentum equation, S=*dUg/dt, Ug=dx/dt. where, Ug is the velocity of grid motion. x is the position of each grid point. Because the grid is moving. How could I write it through UDF ? Thanks anyway. bonny

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