Cavitation in Water jet Pumps

Abstract

Based on the similarity law of jet pump, a new cavitation parameter σ is proposed which has the similar meaning to Thoma's cavitation parameter in turbo pumps. The σ values are determined theoretically and presented as the function of specific speed n_sj so that we may predict cavitation directly by using it in the designing. Experiments are carried out and σ values are confirmed. Comparing these theoretical values with the data previously reported, it is recognized that these are reliable.