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Old   January 5, 2010, 04:25
Default time derivative of velocity
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Is there any way to define time derivative of velocity term in cfx please? I 'm quite interested in this term ,and I want to plot the time history of it.

Thanks a lot.

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Old   January 5, 2010, 08:36
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You should be able to use the '.Time Derivative' operator for most variables in CEL for a transient calculation. For example, for the X component of velocity:

Velocity u.Time Derivative

If this doesn't work, then it will almost certainly work with a User Fortran call to USER_GETVAR.

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Old   January 11, 2010, 18:17
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I looked for the Time Derivative function but couldn't see it either in Pre or Post. Could you specify where to find it please?
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