build a expression in CFX
Hi to everyone :)
I want to build a expression in CFX that sets static pressure equal to 5MPa, where 1<x<1,1<y<1 (x , y are location of domain in x,y direction in meter). Any ideas welcome. After building this expression, how I can use it in numerical solution as an initial value? 
You could do this using interpolation functions, but I would use an expression for this as it is easy and allows you to parameterise things easily. A function something like this should do it:
output = 5 [MPa] * step(1abs(x)/1[m]) * step(1abs(y)/1[m]) Simply use this as the definition for an initial condition. 
Quote:
Can you explain me how can I do this by interpolation function? 
Look in the documentation or tutorials for tips on using interpolation functions.

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