[General] Extracting the midpsan for a centrifugal pump

rafr894 · May 10, 2025, 14:14

Hi. I was wondering if there was a way in Paraview to extract the midspan (or any specific span) surface for a centrifugal pump system that comprises of an inlet pipe, inducer and impeller. I’m familiar with doing this in ANSYS CFD Post, where you define a turbosurface, and the software then extracts a continuous surface (see attachment), which is quite convenient.
Appreciate your time and help! Thank you.

AtoHM · May 23, 2025, 01:18

Unlike Post which seems to get spanwise coordinates from somewhere along the pipeline, Paraview has no, lets call it "topologic knowledge" of your geometry. Therefore I assume you have to either script something or define this midspan surface geometry in CAD. If you have CFD Post still available, I guess you can export there the spatial coordinates of this surface and use that in Paraview to sample your data; however I guess you are switching from Post to PV and do not have access to Post anymore?

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May 23, 2025, 01:18		#2
AtoHM Senior Member M Join Date: Dec 2017 Posts: 707 Rep Power: 13	Unlike Post which seems to get spanwise coordinates from somewhere along the pipeline, Paraview has no, lets call it "topologic knowledge" of your geometry. Therefore I assume you have to either script something or define this midspan surface geometry in CAD. If you have CFD Post still available, I guess you can export there the spatial coordinates of this surface and use that in Paraview to sample your data; however I guess you are switching from Post to PV and do not have access to Post anymore?