J054012 PIVを用いた風洞モデル垂直軸風車の後流構造計測(〔J054-01〕流れの高次元化可視化に向けて(1))

DOI Web Site

書誌事項

タイトル別名
  • J054012 Measurement of Flow Structure around a Wind Tunnel Model VAWT by PIV

抄録

Vertical-axis wind turbines (VAWTs) have been attracting attention in recent years because of omnidirectivity. Namely they can start to rotate by wind from all directions. Moreover it has been reported that interactive flow field of two VAWTs increases the total output power. However an arrangement of two VAWTs loses omnidirectivity that is the great advantage of a VAWT. In order to reduce the disadvantage, we focused on controlling wake of a VAWT by modifying its blade setting angle. We made some small turbine models which have different blade setting angle (θ= 0,3,6 and 9), and conducted a visualization experiment in wind tunnel. After that velocity distribution was calculated by particle image velocimetry (PIV). As a result it was clarified that in the case of θ=6 and 9°, velocity defect area was reduced. This result indicates that it is possible to install VAWTs in further close proximity. Moreover it was revealed that in the case of θ= 0 and 3°, vortex shedding occurred at the forward blade, but in case of θ=6 and 9°, it did not. In this experiment we conclude that change of wake structure by modification of blade setting angle spreads variations of arrangements without performance degradation of the turbine which is installed in downstream.

収録刊行物

  • 年次大会

    年次大会 2013 (0), _J054012-1-_J054012-5, 2013

    一般社団法人 日本機械学会

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ