Harmonic balance Navier-Stokes aerodynamic analysis of horizontal axis wind turbines in yawed wind

被引:13
|
作者
Drofelnik, Jernej [1 ]
Da Ronch, Andrea [1 ]
Campobasso, Michele Sergio [2 ]
机构
[1] Univ Southampton, Fac Engn & Environm, Southampton SO17 1BJ, Hants, England
[2] Univ Lancaster, Dept Engn, Lancaster LA1 4YW, England
基金
英国工程与自然科学研究理事会;
关键词
harmonic balance Navier-Stokes equations; horizontal axis wind turbine aerodynamics; NREL Phase VI wind turbine; NREL 5MW wind turbine; yawed wind aerodynamics; UNSTEADY AERODYNAMICS; FLOW; PREDICTIONS; MODELS;
D O I
10.1002/we.2175
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
Multimegawatt horizontal axis wind turbines often operate in yawed wind transients, in which the resulting periodic loads acting on blades, drive-train, tower, and foundation adversely impact on fatigue life. Accurately predicting yawed wind turbine aerodynamics and resulting structural loads can be challenging and would require the use of computationally expensive high-fidelity unsteady Navier-Stokes computational fluid dynamics. The high computational cost of this approach can be significantly reduced by using a frequency-domain framework. The paper summarizes the main features of the COSA harmonic balance Navier-Stokes solver for the analysis of open rotor periodic flows, presents initial validation results on the basis of the analysis of the NREL Phase VI experiment, and it also provides a sample application to the analysis of a multimegawatt turbine in yawed wind. The reported analyses indicate that the harmonic balance solver determines the considered periodic flows from 30 to 50 times faster than the conventional time-domain approach with negligible accuracy penalty to the latter.
引用
收藏
页码:515 / 530
页数:16
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