Similarities and Geometrical Effects on Rotating Cavitation In Two Scalted Centrifugal Pumps

Hofmann, Michael and Stoffel, Bernd and Friedrichs, Jens and Kosyna, Günter (2001) Similarities and Geometrical Effects on Rotating Cavitation In Two Scalted Centrifugal Pumps. In: CAV 2001: Fourth International Symposium on Cavitation, June 20-23, 2001, California Institute of Technology, Pasadena, CA USA.

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Abstract

Two scaled centrifugal pumps with vaneless radial diffuser running at identical Reynolds-Numbers are in the focus of experiments at Technical University of Braunschweig and Darmstadt University of Technology in the frame of a cooperation hosted by the DFG (Deutsche Forschungsgemeinschaft). Both pumps can hold different runner geometries as well as different leading edge geometries within the same runner. This paper describes experimental investigations of different configurations in both pumps. All configurations show the occurrence of a periodic cavitation state called “rotating cavitation” in a wide range of part load conditions, which onset can be characterized by an almost constant value of the dimensionless parameter ó/2á. Comparison of the main characteristics of both pumps as well as optical investigations to determine the dynamic properties in cavitating conditions have been carried out.

EPrint Type:	Conference or Workshop Item (Lecture)
Subjects:	All Records Session B8 Turbomachinery 2
ID Code:	182
Deposited By:	Bernd Stoffel
Deposited On:	01 May 2001
Record Number:	CAV2001:sessionB8.001
Official Persistent URL:	http://resolver.caltech.edu/CAV2001:sessionB8.001
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