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how to add a source term in a 3D channel??

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Old   October 5, 2006, 21:15
Default how to add a source term in a 3D channel??
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Dear all,

I need help~

I would like to add a potential source term (rho*(gradient of phi)) to the moment equation.(phi is a potential). I am just a new fluent user. What i know at this point is that i need to write a UDF. But i am not familiar with this. can anyone provide me some reference??

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