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TECHNICAL PAPERS

Hydrodynamic Design of Pump Diffuser Using Inverse Design Method and CFD

[+] Author and Article Information
Akira Goto

Ebara Research Co., Ltd., Fujisawa-shi, Japan

Mehrdad Zangeneh

Department of Mechanical Engineering, University College London, London, UK

J. Fluids Eng 124(2), 319-328 (May 28, 2002) (10 pages) doi:10.1115/1.1467599 History: Received August 06, 2001; Revised January 18, 2002; Online May 28, 2002
Copyright © 2002 by ASME
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References

Figures

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Computational grid (Case G)
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Definition of blade loading parameter (Case G)
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Conventional design stage Case C (design point). (a) CFD prediction; (b) oil-film flow pattern
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Velocity vectors near blade and hub surfaces of conventional stage Case C at design point
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Static and total pressure fields in conventional diffuser Case C at design point. (a) Static pressure ΔΨs on diffuser suction surface; (b) total pressure ΔΨt on quasi-orthogonal plane at 25%-chord location
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Blade angle distribution of preliminary design cases having conventional blade angle features
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Velocity vectors near suction surfaces of conventional diffusers at design point
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Velocity vectors near hub surface of conventional diffusers at design point
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Static and total pressure fields in conventional diffuser Case N at design point
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Comparison of predicted overall performance and hydraulic loss analysis at design point
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Comparison of blade angle distribution between conventional Case C and inverse design Case G
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Velocity vectors near blade and hub surfaces of inverse design stage Case G at design point
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Static and total pressure fields in inverse design diffuser Case G at design point; (a) Static pressure ΔΨs on diffuser suction surface; (b) total pressure ΔΨt on quasi-orthogonal plane at 25%-chord location
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Streamwise change in mass averaged static pressure rise coefficient at design point
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Exit flow nonuniformity at diffuser trailing edge at design point
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Comparison of overall performance between conventional design Case C and inverse design Case G
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Inverse design stage Case G (design point). (a) CFD prediction; (b) oil-film flow pattern
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Velocity vectors of inverse design diffuser Case FA at design point
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Effects of stacking condition on total pressure distribution Δψt at design point

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