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Technical Briefs

A Statistical Method on Meridional Profiles of Centrifugal Pumps

[+] Author and Article Information
Jun Zou, Pengfei Wang, Xin Fu

State Key Laboratory of Fluid PowerTransmission and Control,  Zhejiang University, Hangzhou, 310027, China

Xiaodong Ruan1

State Key Laboratory of Fluid PowerTransmission and Control,  Zhejiang University, Hangzhou, 310027, Chinaxdruan@zju.edu.cn

1

Corresponding author.

J. Fluids Eng 134(2), 024502 (Mar 06, 2012) (5 pages) doi:10.1115/1.4005667 History: Received September 05, 2011; Revised December 15, 2011; Published March 06, 2012; Online March 06, 2012

A method based on the medial axis transform (MAT) theory is presented to explore the laws of meridional profiles versus specific speeds for centrifugal pumps. Through extracting each pump’s MAT and transforming to two newly introduced variables, striking features emerge. Based on these features, statistics are carried out on the two variables versus specific speeds. A series of pumps is used to verify this method. According to the laws gained from the statistical results, the meridional profile at any specific speed within this series of pumps can be directly drawn through calculations.

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Copyright © 2012 by American Society of Mechanical Engineers
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References

Figures

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Figure 1

The model of meridional profile for statistics

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Figure 2

(a) The five segments of medial axis of pump IS 80-65-160; (b) the maximum disk radii along medial axis of pump IS 80-65-160; (c) the curves of α (left) and θ (right) along the normalized medial axis τ from inlet to outlet of pump IS 80-65-160; (d) the curves of α along τ for all the pumps listed in Table 1

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Figure 3

The statistical results and the fitting curve

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Figure 4

The calculated meridional profiles (hollow dots) and the approached profiles (solid line)

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