Question about sampleSurface
 

Hi All,

I need to calculate a surface flow rate of a region I defined in the model. I've done a 3D calculation and the job required to know the volume flow rate through certain regions (need to be defined). How could I do this? I am using a stutured grid with uniform grid size. I thought using sampleSurface might be able to do the job but I really cann't find some tutorials to teach me how to do it. What's the best way to do it? Thank you!