[giorgianig]

Dear all,

I am using Openfoam 2312. I am trying to develop a custom function object that compute a linear combination of an area average (at runtime). Seems complicated but it is just computing something like

Output = (0.9-Area_average)/(0.9-0.5)

where Area_average can be computed with the function object "surfaceFieldValue".

In other words, I want to apply an expression to the output of a function object before printing.

I know that I could compile a new function object but I guess there is a simpler approach? Moreover I need it for just one test case.

Thanks in advance

[Yann]

Hello Giorgio,

It looks like a job for the exprField function object!
https://doc.openfoam.com/2312/tools/...eld/exprField/

Cheers,
Yan

[giorgianig]

Originally Posted by Yann

Hello Giorgio,

It looks like a job for the exprField function object!
https://doc.openfoam.com/2312/tools/...eld/exprField/

Cheers,
Yan

Thank you for your reply Yann. I don't see how to make an average using the exprField function object. Maybe I have to make the average using the surfaceFieldValue object and use the result in exprField?