J-Groove による軸流ポンプの不安定性能と吸込み性能の向上  [in Japanese] Improvement of Performance Curve Instability and Suction Performance in Axial flow Pump by New J-Groove  [in Japanese]

Access this Article

Search this Article

Author(s)

Abstract

In a high specific speed pump, such as a mixed flow or an axial flow pump, the head-capacity curve tends to have a rising characteristic, which is called "performance curve instability". To improve this unstable performance, an innovative technique using shallow grooves mounted on an inner casing wall (called J-Grooves) had been developed. By J-Groove, a performance curve instability of a mixed-flow pump was completely suppressed without dropping the maximum efficiency, but it is still difficult to suppress the instability in an axial flow pump without dropping the maximum efficiency.<br> The present study is aimed to attain complete suppression of the performance curve instability with keeping the maximum efficiency in an axial flow pump, and a new type J-Groove technique was developed using the axial flow pump of specific speed n<sub>s</sub>=2000(min<sup>-1</sup>, m<sup>3</sup>/min, m).

Journal

  • Turbomachinery

    Turbomachinery 35(12), 737-744, 2007-12-10

    Turbomachinery Society of Japan

References:  9

Cited by:  2

Codes

  • NII Article ID (NAID)
    10019962747
  • NII NACSIS-CAT ID (NCID)
    AN00004836
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    03858839
  • NDL Article ID
    9279449
  • NDL Source Classification
    ZN15(科学技術--機械工学・工業--流体機械)
  • NDL Call No.
    Z16-978
  • Data Source
    CJP  CJPref  NDL  J-STAGE 
Page Top