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UDF for Body Forces in DPM

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Old   June 23, 2016, 16:39
Post UDF for Body Forces in DPM
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Shalabh Singh
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I want to write a udf for body force on particle in Discrete Phase model that includes the term 0.75*Cd*|u_p-u|*rho_air*(u_y-u_p_y)/(rho_p*dia_p), where u and u_p are air and particle velocities, u_y is y component of u and dia_p is particle diameter.

Can anyone advise me on how to write this UDF?
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