Best method to extract Reynolds stress at outlet.
 

Hello all,

I am looking to sample the Reynolds stress at the outlet for a simulation. These values will act as input for a synthetic eddy method simulation.

So far I have been able to calculate the WHOLE field using:
"pimpleFoam -postProcess -func R"

This calculates the whole field, but without position coordinates. I have two questions:

(1) Could I modify the above code to also output coordinates?
(2) Is there a way to calculate only at the outlet?

Regards!

You could use a surface function object to output R at the outlet:

See $FOAM_ETC/caseDicts/postProcessing/visualization/surfaces

I have used a more brutish approach. I may also try your method, thanks for the reply. I have done the following:

• Generate the whole field using "pimpleFoam -postProcess -func R".

• Obtain cell centre coordinates, where R is stored, by executing "writeCellCentres".

• Input all values of R, and their corresponding coordinates, into Matlab for post-processing.

Regards!