Estimation of an Axial Thrust of Centrifugal Pumps and Pump-Turbines

It is still very difficult to estimate the axial thrust of pump-turbines or of centrifugal pumps with high accuracy. Here we developed a simple method to calculate the pressure distribution and axial thrust of pumps and turbines for very wide range of Reynolds number. The pressure distribution and t...

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Bibliographic Details
Published inNihon Kikai Gakkai rombunshuu. B hen Vol. 73; no. 732; pp. 1663 - 1669
Main Authors MATSUI, Jun, KUROKAWA, Junichi, ITO, Yoshitaka
Format Journal Article
LanguageJapanese
English
Published The Japan Society of Mechanical Engineers 2007
Subjects
Axial Thrust
Balancing Hole
Boundary Layer
Centrifugal Pump
Fluid Force
Turbomachinery
Water Turbine
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Summary:It is still very difficult to estimate the axial thrust of pump-turbines or of centrifugal pumps with high accuracy. Here we developed a simple method to calculate the pressure distribution and axial thrust of pumps and turbines for very wide range of Reynolds number. The pressure distribution and the thrust of centribugal pumps are calculated, and their dependency on Reynolds number is discussed. The effect of balancing hole is evaluated. The calculation on the water turbine makes the dependency of the axial thrust and leakage flow-rate on the Reynolds number clear.
ISSN:0387-5016
1884-8346
DOI:10.1299/kikaib.73.1663