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Old   August 7, 2004, 23:14
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gxlis
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In UDF, how to calculate second oder derivative of velocity,or cross derivative? As you know, we can access the deriative of velocity through C_DUDX, or C_U_G[0], and then I do not know how to obtain D2U/DX2 or D2U/DXDY. Please tell me, I would appreiate it.
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