Method for prediction of the performance of a centrifugal pump w

Details Method for prediction of the performance of a centrifugal pump w Method for prediction of the performance of a centrifugal pump w

1995-09-05

1997-04-01

Look, Edward K.

Rotary kinetic fluid motors or pumps

Method of operation

415104, F04D 1708

Patent

active

056159960

ABSTRACT:
The invention provides a method for predicting the performance of a centrifugal pump with a balance mechanism comprising the steps of assuming leakage amounts in the back of an impeller and a thrust balance mechanism to calculate a flow-rate of the impeller for monitoring a leakage amount of a front and a back of the impeller, calculating a leakage amount in the thrust balance mechanism for judging whether or not a result of the calculation converges, to a set value. If the result does not converge, repeating the steps from the analysis of the flow in the thrust balance mechanism to the calculation of the leakage amount in the thrust balance mechanism. If the result converges, calculating a leakage amount in the pump. If a result of the calculation does not converge, repeating the steps from the calculation of the flow-rate in the impeller until the convergence.

REFERENCES:
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Kurokawa, J., Kamijo, K., Shimura, T., "Axial Thrust Analysis in Lox-Pump", AIAA/SAE/ASM/ASEE 27TH Joint Propulsion Conference, Jun. 24-26, 1991/Sacramento, Ca., pp. 1-9.
Kurokawa, J., Toyokura, T., "Study on Axial Thrust of Radial Flow Turbomachinery", The Second International JSME Symposium Fluid Machinery and Fluidics, Tokyo, Sep. 1972, pp. 31-40.
Kurokawa, J., Sakuma, M., "Flow in a Narrow Gap Along an Enclosed Rotating Disk with Through-Flow", Faculty of Engineering, Yokohama National University, JSME International Journal Series II, vol. 31, No. 2 (1988), pp. 243-251.

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