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Cavitation Studies in Axial Inducers


Nawoj, Henry John (1956) Cavitation Studies in Axial Inducers. Engineer's thesis, California Institute of Technology. doi:10.7907/FJCF-EC97.


Cavitation development was investigated in axial inducers from inception to impeller breakdown using the conventional hydraulic parameters and direct visual observation. Five distinct regimes of cavitation development were observed, and the noise and vibration associated with cavitating pumps was found to occur principally in only one regime of cavitation development. Cavitation in a highly cavitating inducer was found to be adequately modeled using the cavitation similarity number introduced by Prandtl. A simple model is presented for impeller breakdown and experimental data indicate that the general requirements for impeller breakdown given by the model are exhibited in the experimental impellers. A modification to the cavitation number is suggested to accommodate the effusion of dissolved gases from the working fluid into the cavities.

Item Type:Thesis (Engineer's thesis)
Subject Keywords:Aeronautical Engineering
Degree Grantor:California Institute of Technology
Division:Engineering and Applied Science
Major Option:Aeronautics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Acosta, Allan J.
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 January 1956
Record Number:CaltechETD:etd-06162004-153833
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:2621
Deposited By: Imported from ETD-db
Deposited On:17 Jun 2004
Last Modified:13 Jul 2023 23:25

Thesis Files

PDF (Nawoj_hj_1956.pdf) - Final Version
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