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Analyses of the Characteristics of a Centrifugal Impeller with Leading Edge Cavitation by Mapping Methods

Tsujimoto, Yoshinobu and Acosta, Allan J. and Brennen, Christopher E. (1986) Analyses of the Characteristics of a Centrifugal Impeller with Leading Edge Cavitation by Mapping Methods. Japan Society of Mechanical Engineers. Journal, 52 (480). pp. 2954-2962. ISSN 0021-4728. http://resolver.caltech.edu/CaltechAUTHORS:TSUjjmes86b

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Abstract

The characteristics of a centrifugal impeller under a condition with leading edge cavitation are analyzed by using conformal mapping methods. It is assumed that the thickness of the cavity is small, and linear cavity models are used. Concerning the treatment of the Bernoulli equation, two different models are considered. The first one is based on a full Bernoulli equation in a rotating frame. In the second model, the Bernoulli equation is linearized on the assumption that the disturbance due to cavity is small. The second model predicts shorter cavity, but the differences in the pressure distribution and in the head coefficient are small for the conditions with the same cavity length. The results of the first model are in general agreement with those by a singularity method and experiments.


Item Type:Article
Additional Information:Article is in Japanese.
Subject Keywords:Cavitation, Conformal Mappimg Methods, Leading Edge Cavitation, Centrifugal Impeller, Cavity Flow Model, Linearization, Closed Model
Record Number:CaltechAUTHORS:TSUjjmes86b
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:TSUjjmes86b
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:225
Collection:CaltechAUTHORS
Deposited By: Christopher Brennen
Deposited On:14 Dec 2004
Last Modified:26 Dec 2012 08:39

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