Experimental study on unstable characteristics of mixed-flow pump at low flow-rates

Hiroshi Funakoshi*, Hiroshi Tsukamoto, Koji Miyazaki, Kazuyoshi Miyagawa

*この研究の対応する著者

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

Static and dynamic characteristics of a mixed flow pump were measured at low flow rate, where the steady characteristic curves show a positive slope. Unsteady flow was measured at upstream and downstream of impeller, as well as on the casing wall of diffuser passage by using a fast response five-hole pitot tube and semi-conductor type pressure transducers. Dynamic response of the pump to the sinusoidal change in flow rate was measured under constant rotational speed. As a result of the unsteady flow measurements, the positive slope of steady characteristic was found to be caused by the impeller tip separation, inlet backflow, and pre-rotation. Moreover, the dynamic characteristics of the pump were found to become unstable with the increased frequency of flow rate.

本文言語English
ホスト出版物のタイトルProceedings of the 4th ASME/JSME Joint Fluids Engineering Conference
ホスト出版物のサブタイトルVolume 1, Part A, Forums
編集者A. Ogut, Y. Tsuji, M. Kawahashi, A. Ogut, Y. Tsuji, M. Kawahashi
ページ609-614
ページ数6
出版ステータスPublished - 2003 12月 1
外部発表はい
イベント4th ASME/JSME Joint Fluids Engineering Conference - Honolulu, HI, United States
継続期間: 2003 7月 62003 7月 10

出版物シリーズ

名前Proceedings of the ASME/JSME Joint Fluids Engineering Conference
1 A

Conference

Conference4th ASME/JSME Joint Fluids Engineering Conference
国/地域United States
CityHonolulu, HI
Period03/7/603/7/10

ASJC Scopus subject areas

  • 機械工学
  • 流体および伝熱

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