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RESEARCH PAPERS

Studies on Cavitation Inception Process in Separated Flows

[+] Author and Article Information
S. G. Milton, V. H. Arakeri

Department of Mechanical Engineering, Indian Institute of Science, Bangalore 560012, India

J. Fluids Eng 114(1), 85-92 (Mar 01, 1992) (8 pages) doi:10.1115/1.2910005 History: Received March 05, 1991; Online May 23, 2008

Abstract

Studies related to cavitation inception process in separated flows are reported. Experimental observations of bubble appearance in grooves with laminar or turbulent boundary layer over them have clearly shown that gaseous diffusion process is significantly enhanced in turbulent flow. This process can lead to local nuclei size modification in environment similar to that of flow over a groove, like laminar separation “bubbles.” Cavitation inception modeling including this aspect is carried out for predicting inception conditions associated with “bubble-ring” cavitation commonly observed on hemispherically nosed axisymmetric body. Qualitative dependence of predicted inception numbers with velocity is found to agree very well with experimental observations of Carroll (1981).

Copyright © 1992 by The American Society of Mechanical Engineers
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