Research on Darrieus-type hydraulic turbine for extra-low head hydropower utilization

A. Furukawa, S. Watanabe, K. Okuma

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

A Darrieus-type turbine has been investigated for extra-low head hydropower utilization. In the present paper, authors'research on Darrieus-type hydraulic turbine is briefly reviewed. The working principle of Darrieus turbine is explained with advantage of its simple structure, at first. Then the fluid-dynamic difference between rotating and linear motions of a blade in a uniform flow is clarified with guiding principle of high performance design of Darrieus turbine. Cavitation problem is also described. Next, effects of duct-casing, consisting of an intake, runner section and draft tube, are discussed and a simplified structure of Darrieus turbine is shown by installing the inlet nozzle. Finally, in the practical use, an adjustment of inlet nozzle section by lowering the inlet nozzle height is proposed when flow rate is varied temporally and seasonally.

Original languageEnglish
Article number012003
JournalIOP Conference Series: Earth and Environmental Science
Volume15
Issue numberPART 1
DOIs
Publication statusPublished - Dec 1 2012
Event26th IAHR Symposium on Hydraulic Machinery and Systems - Beijing, China
Duration: Aug 19 2012Aug 23 2012

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All Science Journal Classification (ASJC) codes

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)

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