Time-accurate blade surface static pressure behaviour on a rotating H-Darrieus wind turbine

Longhuan Du, Grant Ingram, Robert G. Dominy

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)
7 Downloads (Pure)

Abstract

Time‐accurate blade pressure distributions on a rotating H‐Darrieus wind turbine at representative tip speed ratios during start‐up are presented here, which allow blade dynamic stall and laminar separation bubbles to be observed clearly and which provide a rare experimental demonstration of the flow curvature effect inherent in H‐Darrieus turbine operation. The convection of a dynamic stall vortex along the blade surface at high reduced frequency has also been clearly identified. This study provides new information of the complex aerodynamics of the vertical axis wind turbines (VAWTs) and provides unique experimental data to validate the transient blade static surface pressure distribution predicted by CFD models. To the best of the authors' knowledge, this is the first time that the instantaneous pressure variation around the blade has been measured and recorded directly for an H‐Darrieus wind turbine.
Original languageEnglish
Pages (from-to)563-575
Number of pages13
JournalWind Energy
Volume22
Issue number4
Early online date11 Jan 2019
DOIs
Publication statusPublished - 1 Apr 2019

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