Very silly problem here. But unfortunately i haven’t founded any solutions yet. I aim to estimate the flow rate at some 2D-surfaces internal to my mesh (i.e no boundaries or inlet-outlet patch), using the filter SurfaceFlow. Could do it by taking different slices, but in this way it’s going to be too laborious.
I have instead the .STL files of these internal surfaces (made it by FreeCAD). Basically internal circular holes of my burner. Can i so extract surfaces from my computed mesh that coincide with my STL geometry? Following what method, in case?
Thank you Matt! Unfortunately i’m not still be able to manage my issue. As you can see my internal surface (.STL, blue circle) is entirely contained in my mesh domain (grey region).
Thank you very much Matthieu. Your suggestions are always gold, for each of us. Is it okay in your opinion if i manually select these circular surfaces with the command “Select cells on”? Or the “select points on” command instead?
I don’t know what choice could be better if i run “surfaceFlow” aftermath.
Hello Mathieu, you’re perfectly right, the question is quite unclear.
From the picture above you can see some holes whose normals are not aligned with the Cartesian coordinates - Y (i.e tangential injectors). If i apply the ‘surfaceFlow’ filter on these holes do i get some reasonable values of the volumetric flow rate? As far as i know the radial and tangential velocity components in polar coordinates are not calculated by default in Paraview.
Apologizes if i has gone off topic with this demand.
Sorry for my late reply. This is the question indeed: does the surfaceFlow filter hold if i apply it on a 2D patch whose normal is not aligned with the three Cartesian directions?
! What i’ve posted before were just an example. I have to compute the flow rate for the holes of my burner crown (the circles in the middle):
