Hello,

I'm writing a macro for CFX Post that calculates the mass flow rate across a series of 20 planes named 'Channel 1', 'Channel 2', etc.

I have written the following loop:

! for($j=1;$j<=20;$j++){ !($flowrate)=evaluate('massFlow()@Channel $j'); !}

but I get en error message since CFX does not recognize my surface Channel $j. Does somebody know a way to solve this problem? Is it possible to have an incremental variable name in a CCL?

Hi Federico,

The problem is the single quotes around the mass flow expression. Within single quotes the text is taken directly, so the value of $j does not get interpolated from PERL. You can either put it in double quotes, in which case you need to escape the brackets, @ symbol, etc., or you can refer to your expression by name and update the expression definition at each pass. I recommend the latter, which would change your script to:
! for($j=1;$j<=20;$j++){LIBRARY: CEL: EXPRESSIONS: myFlowRate = massFlow()@Channel $j END ENDEND!($flowrate)=evaluate('myFlowRate');!}-CycLone

It works perfectly. Thank you very much CycLone