Turbomachinery
Online ISSN : 1880-2338
Print ISSN : 0385-8839
ISSN-L : 0385-8839
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Volume 38, Issue 7
Displaying 1-2 of 2 articles from this issue
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Technical papers
  • Internal Flow and Limiting Streamlines Observations of Contra-Rotating Axial Flow Pump at Partial Flow Rate
    Satoshi USAMI, Shinpei MOMOSAKI, Satoshi WATANABE, Akinori FURUKAWA, K ...
    Article type: Original Article
    2010 Volume 38 Issue 7 Pages 436-443
    Published: 2010
    Released on J-STAGE: May 31, 2013
    DOIhttps://doi.org/10.11458/tsj.38.436
    JOURNAL FREE ACCESS
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    An application of contra-rotating rotors, in which a rear rotor is in tandem with a front one and these rotors rotate in the opposite direction each other, has been proposed against a demand for developing higher specific speed axial flow pump. One prototype rotors, which we have designed with a conventional method, has given the positive slope of head characteristic curve especially in the rear rotor. It is necessary to understand the internal flow behavior in the rear rotor to establish the design guideline for achieving higher and more reliable performance. In the present study, we carried out the experimental investigations of the internal flow field of the rear rotor, especially at partial flow rates, by Laser Doppler Velocimetry (LDV) for the main flow and the limiting streamlines observation on rotor surfaces for the boundary layer flows.
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