Improving the performance of Savonius wind turbine by installation of a circular cylinder upstream of returning turbine blade: Improving the Performance of Savonius Wind Turbine

Triyogi Yuwono*, Gunawan Sakti, Fatowil Nur Aulia, Adi Chandra Wijaya

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

The effect of the installation of a circular cylinder upstream of the returning turbine blade on the performance of the Savonius wind turbine was studied experimentally. The experiments are carried out for Re = 99,000. The circular cylinder with a diameter relative to the blade diameter (d/D) = 0.54 was installed at a distance between the circular cylinder and the returning blade relative to the blade diameter (S/D) varied from 1.4 to 2.2. The experimental results indicate that changes in distance S/D may improve the turbine power coefficient, where the maximum power coefficient occurs at S/D = 1.4, which increases in the power coefficient around 12.2% at a tip-speed ratio of 0.65 relative to the conventional one. However, when the circular cylinder is placed away from the returning blade (S/D > 1.8), there is practically no change in the power coefficient.

Original languageEnglish
Pages (from-to)4923-4932
Number of pages10
JournalAlexandria Engineering Journal
Volume59
Issue number6
DOIs
Publication statusPublished - Dec 2020

Keywords

  • Center to center distance
  • Circular cylinder
  • Moment coefficient
  • Power coefficient
  • Savonius wind turbine
  • Static torque

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