wind turbinesnumerical analysismodelsthe yaw anglecomputational fluid dynamicsdynamic stallthe velocity distributionA typical dynamic characteristic of horizontal axis wind turbine shows up under yaw condition. Prediction accuracy is low for momentum-blade element theory and related engineering prediction model....
To investigate possible increases of the capacity factor of wind turbines, six airfoils are chosen for evaluation, three based on high Cl, low Cd/Cl, and wide operational range, and three others simply based on low Cd. Aerodynamic performance of the chosen airfoils is projected for a 45 m ...
Moreover, the influence of sandy environments on the performance of wind turbines is found to be as follows. At low wind speeds, the power output of the sandy turbine is greater than that of the clean turbine when they run in a sandy environment. Also, it is found that ...
Aerodynamic performance enhancement of horizontal axis wind turbines by dimples on blades: Numerical investigationWind turbineTorquePassive methodDimplesPitch angleWind speedIn this study, the effect of dimpled surface blade on the performance of V47-660 kW horizontal axis wind turbine is numerically ...
覆冰 破坏了翼型的流线从而直接影响了翼型的气动性能;从动态流场特性分析,覆冰改变了翼型动态升 力系数曲线的斜率从而影响到风力机的气动弹性稳定性. 关键词:风力机;覆冰;$809翼型;动态失速;升力系数;分离涡 InfluenceofIcingPatternonAerodynamicPerformance OfWindTurbiReAirfoIIS ZHANGPin—ting, YANGTao ,LUXu—xiang...
Aerodynamic performance of wind turbines The state-of-the-art of performance prediction methods is summarized for both horizontal and vertical axis wind turbines. Strip theory methods for horizont... RE Wilson,PBS Lissaman,SN Walker - 《Nasa Sti/recon Technical Report N》 被引量: 297发表: 1976...
itsaerodynamicperformance,whereasfromtheviewofdynamicflowfieldcharacteristics,icingchanges thedynamicliftcoefficient,andaccordinglyinfluencesthestabilityofturbineSaero—elasticity. Keywords:windturbine;icing;$809airfoil;dynamicstall;liftcoefficient;separationvortex ...
Currently, passive flow control technologies have been practically applied in wind power equipment to improve the efficiency. Hafien et al. [9] used flexible flaps to ameliorate the dynamic performance of NACA0012 airfoil. The result shown that flexible flaps could diminish the size and intensity ...
Han Kyu LeeChonbuk National UniversityKwon, S.D., Lee, S.H., Lee, H.K., 2011. Aerodynamic performance of bridges equipped small wind turbines. In: Conference Proceedings of the Society for Experimental Mechanics series. 3, pp. 85-92....
The wind turbine performance curve is an effective method for evaluation of wind turbine,and is also the basic foundation of the control system design. In order to improve the wind utilization efficiency of wind turbines,the aerodynamic performance of wind turbines should be evaluated in the process...