Turbomachinery
Online ISSN : 1880-2338
Print ISSN : 0385-8839
ISSN-L : 0385-8839
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Volume 42, Issue 1
Displaying 1-2 of 2 articles from this issue
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Technical papers
  • Analytical Study on Stall Stagnation Boundaries and Related Phenomena in Axial-Flow Compressor and Duct Systems
    （Part1：Geometrical Investigations on Stall Stagnation Boundary）
    Nobuyuki YAMAGUCHI
    Article type: Technical papers
    2014 Volume 42 Issue 1 Pages 40-50
    Published: 2014
    Released on J-STAGE: October 24, 2017
    DOIhttps://doi.org/10.11458/tsj.42.40
    JOURNAL FREE ACCESS
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    Stall stagnation phenomena in the system of axial-flow compressors and ducts are studied on the basis of analytical results by a code on surge transients analysis and simulation with respect to a variety of delivery duct configurations coupled with either a nine-stage compressor or a single stage fan. The stall stagnation boundary was found to be formed mainly by two zones, B- and A-boundaries. The B-boundary tends to occur for plenum-type delivery ducts with relatively short length and very wide sectional area. It is understood in the context of the concept of some limiting conditions of E.M. Greitzer's B parameter. On the other hand, the A-boundary is a newly-found one. It tends to occur for narrow and long delivery ducts in the case of the suction duct with relatively short length.
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