Rotating Choke and Choked Surge in an Axial Pump Impeller

• WATANABE Toshifumi

  大阪大学　大学院基礎工学研究科

• SATO Hideyoshi

  ヤマハ発動機(株)

• HENMI Yasuhiko

  ヤマハ発動機(株)

• HORIGUCHI Hironori

  大阪大学　大学院基礎工学研究科

• KAWATA Yutaka

  大阪工業大学　工学部

• TSUJIMOTO Yoshinobu

  大阪大学　大学院基礎工学研究科

Bibliographic Information

Other Title

• 軸流ポンプ羽根車に生じる旋回チョークとチョークトサージ
• ジクリュウ ポンプ ハネグルマ ニ ショウジル センカイ チョーク ト チョークトサージ

Abstract

Unlike usual turbopump inducers, the axial flow pump tested operates very stably at design flow rate without rotating cavitation nor cavitation surge. Flow visualization suggests that this is because the tip cavity smoothly extends into the flow passage without the interaction with the leading edge of the next blade. However, at low flow rate and low cavitation number, choked surge and rotating choke were observed. Their correlation with the performance curve under cavitation is discussed and their instantaneous flow fields are shown.

Journal

• Turbomachinery

  Turbomachinery 37 (9), 517-525, 2009

  Turbomachinery Society of Japan

Keywords

• Pump
• Cavitation
• Inducer
• Cavitation Instability
• Rotating Choke
• Choked Surge

Details

• CRID: 1390282679522652544
• NII Article ID: 10025078145
• NII Book ID: AN00004836
• DOI: 10.11458/tsj.37.517
• ISSN: 18802338
• ISSN: 03858839
• NDL BIB ID: 10418927
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10418927
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed