Data transfer between different foam solvers
 

I wanted to extract data with the following text format:
x y z Vx Vy Vz

Attahced is a figure where a blue box is an interesting region and needs to be extracted as a text format. This data can be used as a source term for another foam solver. How can I manage to extract the data for the blue domain?
Thanks in advance for your help.

You can use "sample" to postprocess, or "functionObjects" to get the data at runTime.