Scale Effects in a Mixed Flow Pump: Part 2

Author:

Soundranayagam S1,Ramarajan V1

Affiliation:

1. Department of Mechanical Engineering, Indian Institute of Science, Bangalore, India

Abstract

The measured variation of losses in a mixed flow pump have been analysed to determine the fraction V of the losses that are dependent on Reynolds number and the exponent n that characterizes that dependence. The variation of the Reynolds number dependent fraction has been obtained for different operating points on the pump characteristic. It is shown that the experimentally determined points are fitted very well with several combinations of V and n within the experimental range and it is strongly suggested that the exponent n be chosen on the basis of a-priori theoretical grounds. The importance of specifying a model reference Reynolds number is pointed out. The present formulae used for efficiency scale-up are most useful in the region of rapidly changing efficiency below the knee in the efficiency–Reynolds number curve. They are not applicable in the region of most practical interest in Reynolds numbers above the knee where prototype pumps operate.

Publisher

SAGE Publications

Subject

General Engineering

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. PIV Investigations of the Flow Field in the Volute of a Rotary Blood Pump;Journal of Fluids Engineering;2004-09-01

2. Performance of a Mixed Flow Pump with Varying Tip Clearance: Part 2;Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy;1996-08

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