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Proceedings of the 10th International Symposium on Cavitation (CAV2018)

Editor
Joseph Katz
Joseph Katz
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ISBN:
9780791861851
No. of Pages:
1108
Publisher:
ASME Press
Publication date:
2018

3D numerical simulations with mass transfer cavitation model are performed in a centrifugal pump (nq=26 min-1). Simulation results are compared to measurements of NPSH characteristics and optical measurements of void structures. Transient single bubble cavitation is observed in the experiments with hydraulically smooth blades, whereas in the simulations, the cavitation region appears as stationary sheet cavitation for the entire operation range. Local cavitation structures in the impeller are spatially integrated for measurements and simulation results. The resulting cavitation intensity provides additional information on the extent of cavitation zones at NPSH levels well above NPSH3%, where the head is yet unaffected by cavitation. The NPSH3% curve as well as cavitation intensity are well predicted, although local void structures show a mismatch to measurements.

1.
Introduction
2.
Experimental Setup
3.
Numerical Setup
4.
Results
5.
Conclusion
6.
References
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