Passive control of dynamic stall in a H-Darrieus Vertical Axis Wind Turbine using blade leading-edge protuberances

被引：27

作者：

Goncalves, Afonso N. C. ^{[1
]}

Pereira, Jose M. C. ^{[1
]}

Sousa, Joao M. M. ^{[1
]}

机构：

[1] Univ Lisbon, Inst Super Tecn, IDMEC, Ave Rovisco Pais 1, P-1049001 Lisbon, Portugal

来源：

APPLIED ENERGY | 2022年 / 324卷

关键词：

Vertical Axis Wind Turbine (VAWT); Dynamic stall; Leading-edge protuberances; Vortex generators; Experimental study; Computational fluid dynamics; PERFORMANCE; IMPROVEMENT; SERRATIONS; TUBERCLES; CFD;

D O I：

10.1016/j.apenergy.2022.119700

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Dynamic stall flow conditions affect the performance of most Vertical Axis Wind Turbine (VAWT) designs; however, the associated losses are especially relevant in smaller turbines, such as those typically used in urban environment applications. The work described in this paper experimentally evaluated the effectiveness of leading-edge protuberances in controlling the aforementioned stall behavior. A numerical study was first performed to define the leading-edge geometry to be subsequently tested in the wind tunnel. A custom experimental setup was also developed for this purpose. The wind tunnel measurements of the modified turbine showed significant performance gains over the baseline and a considerably improved self-starting behavior. The power coefficient increase was between 46% and 20% for wind velocities ranging from 5.5 m/s to 9 m/s, respectively. Nevertheless, the tip-speed ratio characteristics of the studied turbine were not meaningfully affected by the use of leading-edge protuberances.

引用

页数：14

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