Suppression of Cavitation Instabilities in an Inducer by Circumferential Groove and Explanation of Higher Frequency Components

• Kang Donghyuk

  Graduate School of Engineering Science, Osaka University

• Arimoto Yusuke

  Graduate School of Engineering Science, Osaka University

• Yonezawa Koichi

  Graduate School of Engineering Science, Osaka University

• Horiguchi Hironori

  Graduate School of Engineering Science, Osaka University

• Kawata Yutaka

  Faculty of Engineering, Osaka Institute of Technology

• Hah Chunill

  NASA Glenn Research Center

• Tsujimoto Yoshinobu

  Graduate School of Engineering Science, Osaka University

Abstract

The purpose of the present research is to suppress cavitation instabilities by using a circumferential groove. The circumferential groove was designed based on CFD so that the tip leakage vortex is trapped by the groove and does not interact with the next blade. Experimental results show that the groove can suppress rotating cavitation, asymmetric cavitation and cavitation surge. However, weak instabilities with higher frequency could not be suppressed by the groove. From the analysis of pressure pattern similar to that for rotor-stator interaction, it was found that the higher frequency components are caused by the interaction of backflow vortices with the inducer blades.

Journal

• International Journal of Fluid Machinery and Systems

  International Journal of Fluid Machinery and Systems 3 (2), 137-149, 2010

  Turbomachinery Society of Japan, Korean Society for Fluid Machinery, Chinese Society of Engineering Thermophysics, IAHR

Keywords

• Inducer
• Cavitation instabilities
• Circumferential groove
• Higher frequency component

Details

• CRID: 1390001205296632448
• NII Article ID: 130004542435
• DOI: 10.5293/ijfms.2010.3.2.137
• ISSN: 18829554
• Web Site: http://ocean.kisti.re.kr/downfile/crosscheck/kfma1/JAKO201020065114107.pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed