Studies on Cavitation Occurring on the Runner Blade of a Darrieus-Type Water Turbine

Yasuo Takamatsu, Akinori Furukawa, Kusuo Ōkuma, Kazuki Takenouchi, Toshihiko Sasaki, Guo Hua Zhao

Research output: Contribution to journalArticlepeer-review


Cavitation tests were carried out on a Darrieus-type cross-flow water turbine, which would be in practical use for small water power. In the present paper, cavitation phenomena occurring on the Darrieus runner with various blade sections are explained and the characteristics of the incident cavitation coefficient for the attack angles in relative flow around the Darrieus blades are also evaluated with theoretical considerations of the difference between the circular motion of the Darrieus blades and the linear motion of those in a uniform steady flow. As the result, a useful method is proposed for estimating the retired net positive suction head (NPSH) of a Darrieus-type water turbine.

Original languageEnglish
Pages (from-to)2008-2013
Number of pages6
JournalTransactions of the Japan Society of Mechanical Engineers Series B
Issue number527
Publication statusPublished - 1990
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering


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