[Pavelko]

Hello All,

I need to simulate a pressure impulse at inlet boundary condition:

for t<=0.01 I need:
Pin=Pmax*(sin(w*t)^2)
and for t>0.1
Pin=0
where Pmax and w are known.

Please help to write it using CFX expressions.

Thank you,
P.K.

[ghorrocks]

In CFX V13 you can use if statements in CEL so this is easy. In previous versions you need to use the step function - still easy, but a bit weird. For instance Pin=step(t-0.01[s])*Pmax*(sin(w*t)^2) should do it.

I note your function is undefined for 0.01<t<0.1. I assume that is a typo.

[Pavelko]

Yes, this is a typo
Thank you very much!