Hello everyone, I’m working on the geometric design of a centrifugal pump impeller and need guidance on drawing its meridional (axial) section. Specifically, I’d like to :
- Determine the axial extension z_E and the radii of curvature R_DS and R_TS for the front and rear shrouds (see Chap. 7.2.2.1 in Gülich’s “Centrifugal Pumps”).
- Compute all key diameters (d1, d1i, dn, d2), widths (b1, b2) and clearances (g1).
- Relate these to the blade inlet/outlet angles beta1 and beta2 and the minimum throat area A1q.
What formulas or step-by-step procedures do experts use to position z_E, R_DS, R_TS, and construct the meridional outline?
Any references would be hugely appreciated.
Thank you!
Sure, I'am happy to help you — designing the meridional section is a key step in getting your impeller right. Here’s a practical way to approach it.
If you have , Gülich’s book (Chapter 7.2.2.1) it explains this very well. Also, Stepanoff and Lazarkiewicz give good practical charts must check out.
Hi, Thanks a lot for your helpful reply! Your explanation on the meridional section really clarified things for me. I appreciate the practical tips and the book references — very useful! If you don’t mind, could you share your LinkedIn profile? I’d love to ask you a few more questions about this method if possible. Best,
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