Numerical 3D Simulation of the NPSH Characteristics of Centrifugal Pumps with Local and Integral Analysis of Void Structures


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.

2.Experimental Setup
3.Numerical Setup
Full text of this content:

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In