Numerical Study of Rotating Stall in a Pump Vaned Diffuser-Reference-Cited by-同舟云学术

Numerical Study of Rotating Stall in a Pump Vaned Diffuser

Published:2002-05-28 Issue:2 Volume:124 Page:363-370
ISSN:0098-2202
Container-title:Journal of Fluids Engineering
language:en
Short-container-title:

Author:

Sano Takeshi¹,Yoshida Yoshiki²,Tsujimoto Yoshinobu²,Nakamura Yuki³,Matsushima Tatsuhito⁴

Affiliation:

1. Mitsubishi Heavy Industries, Ltd., Takasago Machinery Works, 2-1-1, Shinhama, Arai, Takasago, Hyogo 676-8686, Japan

2. Osaka University, Graduate School of Engineering Science, 1-3, Machikaneyama, Toyonaka, Osaka 560-8531, Japan

3. Mitsubishi Heavy Industries, Ltd., Takasago Research & Development Center, 2-1-1, Shinhama, Arai, Takasago, Hyogo 676-8686, Japan

4. Software Cradle Co., Ltd., 6-1-1, Nishinakajima, Yodogawa, Osaka, Osaka 532-0011, Japan

Abstract

This paper treats the flow instabilities in a vaned diffuser by using CFD. A commercial code with the standard κ-ε turbulence model was used for the present work. It was found that the flow instabilities in the vaned diffuser: i.e., rotating stall, alternate blade stall, and asymmetric stall, could be simulated by the present calculations. These instabilities were observed in a range with negative slope of the pressure performance curve of the diffuser. The rotating stall onset flow rate is larger for the case with larger clearance between the impeller and diffuser vanes.

Publisher

ASME International

Subject

Mechanical Engineering

Link

http://asmedigitalcollection.asme.org/fluidsengineering/article-pdf/124/2/363/5679009/363_1.pdf

Reference10 articles.

1. Hergt, P., and Starke, J., 1985, “Flow Patterns Causing Instabilities in the Performance Curves of Centrifugal Pumps with Vaned Diffusers,” Proceedings of the Second International Pump Symposium, pp. 67–75.

2. Eisele, K., Zhang, Z., Casey, M. V., Gu¨lich, J., and Schachenmann, A., 1997, “Flow Analysis in a Pump Diffuser-Part1: LDA and PTV Measurements of the Unsteady Flow,” ASME J. Fluids Eng., 119(4), pp. 968–977.

3. Shi, F., and Tsukamoto, H., 2001, “Numerical Study of Pressure Fluctuations Caused by Impeller-Diffuser Interaction in a Diffuser Pump Stage,” ASME J. Fluids Eng., 123(3), pp. 466–474.

4. Nohmi, M., and Goto, A., 1998, “Experimental and Computational Study of the Flow in a Vaned Return Channel of a Low Specific Speed Pump,” ASME, FEDSM98-4857.

5. Torbergsen, E. A., 1998, “Impeller/Diffuser Interaction forces in Centrifugal Pumps,” Doctor thesis, Norwegian University of Science and Technology.

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