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

Du, Longhuan; Ingram, Grant; Dominy, Robert G.

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.

Citation

Du, L., Ingram, G., & Dominy, R. G. (2019). Time-accurate blade surface static pressure behaviour on a rotating H-Darrieus wind turbine. Wind Energy, 22(4), 563-575. https://doi.org/10.1002/we.2307

• Journal Article Type: Article
• Acceptance Date: Dec 11, 2018
• Online Publication Date: Jan 11, 2019
• Publication Date: Apr 30, 2019
• Deposit Date: Feb 21, 2019
• Publicly Available Date: Jan 11, 2020
• Journal: Wind Energy
• Print ISSN: 1095-4244
• Electronic ISSN: 1099-1824
• Publisher: Wiley Open Access
• Peer Reviewed: Peer Reviewed
• Volume: 22
• Issue: 4
• Pages: 563-575
• DOI: https://doi.org/10.1002/we.2307
• Public URL: https://durham-repository.worktribe.com/output/1307389