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rystokes January 5, 2010 04:25

time derivative of velocity

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.


cfdgremlin January 5, 2010 08:36

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.


kingjewel1 January 11, 2010 18:17

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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