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Correlations of thermodynamic effects for developed cavitationThe net positive suction head (NPSH) requirements for a pump are determined by the combined effects of cavitation, fluid properties, pump geometry, and pump operating point. An important part of this determination is the temperature depression (Delta T). Correlations are presented of the temperature depression for various degrees of developed cavitation on venturis and ogives. These correlations, based on a semi-empirical entrainment theory, express Delta T in terms of the dimensionless numbers of Nusselt, Reynolds, Froude, Weber, and Peclet, and dimensionless cavity length (L/D). The Delta T data were obtained in Freon 114, hydrogen and nitrogen for the venturis and in Freon 113 and water for the ogives.
Document ID
19790040292
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Billet, M. L.
(Pennsylvania State Univ. University Park, PA, United States)
Holl, J. W.
(Pennsylvania State Univ. University Park, PA, United States)
Weir, D. S.
(Pennsylvania State University University Park, Pa., United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1978
Subject Category
Fluid Mechanics And Heat Transfer
Meeting Information
Meeting: Polyphase flow in turbomachinery; Winter Annual Meeting
Location: San Francisco, CA
Start Date: December 10, 1978
End Date: December 15, 1978
Accession Number
79A24305
Funding Number(s)
CONTRACT_GRANT: NGL-39-009-001
Distribution Limits
Public
Copyright
Other

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