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Old   May 24, 2011, 00:47
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nayyer
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Hi all
I want to do a transient analysis in ansys-cfx and I want to have following B.C s at inlet and outlet:

At inlet of the tube: a pressure of 1333.2pa is applied during 0.003s and 0 afterwards.

At the outlet: a pressure of 0 Pa is imposed.

Now my question in that: how can I write a CEL for the dependence of pressure on the time at the inlet of tube??
I will be glad if anyone can give me some helps in this topic.
thanks alot
kind regards
Rada
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Old   May 24, 2011, 07:41
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Glenn Horrocks
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Set the pressure equal to 1333.2[Pa] * step((0.003[s]-t)/1[s])

You can also do this using if functions or a 1D interpolation function.
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