摘要
广义致动盘方法是通过引入体积力代替叶片的致动盘技术与三维Navier--Stokes方程相结合来获得风力机周围流场信息的一种方法.该方法避免了花费大量网格与计算资源去求解风力机叶片的附面层,从而可以把更多的网格与计算资源用于风力机尾流流场的模拟,非常适合用于风力机尾流流场的研究.以NH1500风力机为计算模型,将常规CFD(computational fluid dynamics)方法与广义致动盘方法计算所得的叶片载荷分布进行比较,以验证广义致动盘方法的可行性.然后使用广义致动盘方法对风场中串列风力机进行数值模拟,研究串列风力机之间间距变化时,上游风力机产生的尾流对下游风力机的干扰影响.
In this paper, a generalized actuator disk method combined with a three-dimensional Navier-Stokes equation solver is used to obtain the flow fields about wind turbines, in which the body forces are used in place of the blades of the wind turbine. The numerous meshes and the huge computational resource can be avoided in resolving the blade boundary layers, and more meshes and computational resources can be used to simulate the wind turbine wake flow field. Therefore, the generalized actuator disk method is suitable for the study of the wind turbine wake. Computational results for the wind turbine NH1500 obtained by the generalized actuator disk method and the common CFD （computational fluid dynamics） method are compared in the load distribution on the blade, validating the effectiveness and efficiency of the generalized actuator disk method. The generalized actuator disk method is then performed for two wind turbines in tandem to investigate the interaction of the wake created by the front wind turbine on the downstream wind turbine performance in various distances between the two wind turbines.
出处
《力学与实践》
北大核心
2013年第5期17-22,90,共7页
Mechanics in Engineering
基金
国家973计划项目(2014CB046200)
中央高校基本科研业务费专项资金资助(NP2012102)
南京航空航天大学科研基金创新创优基金(XCA12003)
江苏高校优势学科建设工程资助项目
关键词
风力机
广义致动盘方法
计算流体力学
尾流
功率
wind turbine, generalized actuator disk method, computational fluid dynamics, wake, power
