风力机叶片周边瞬态风场的混合数值模拟  

Hybrid Numerical Simulation of Fluctuating Wind Field around a Wind Turbine Blade

作　　者：楼文娟[1] 罗罡[1] 杨伦[1] 黄铭枫[1] 

机构地区：[1]浙江大学建筑工程学院,杭州310058

出　　处：《土木建筑工程信息技术》2013年第4期10-14,共5页Journal of Information Technology in Civil Engineering and Architecture

基　　金：高等学校博士学科点专项科研基金博导类资助课题(20110101110046)

摘　　要：本文根据已有的三维瞬态风场混合数值模拟方法,首先利用k-ε湍流模型对风力发电机叶片周边的时均湍流场进行CFD数值模拟,用ESDU推荐的方法计算了叶片附近的Reynolds应力张量,并修正叶片周边风场的脉动风功率谱密度函数。基于随机流场生成方法逐点模拟了叶片周边的三维脉动风速场,为今后进行叶片脉动荷载的求解奠定了基础。Based on a hybrid numerical simulation method of the three-dimensional fluctuating wind field proposed before,the time-averaged turbulent flow field around a wind turbine blade was calculated by means of k-εturbulence model.Reynolds stress tensors were calculated with the method recommended by ESDU and were used to modify the power spectral destiny functions of wind velocity.Three-dimensional fluctuating wind velocity field was simulated based on random flow generation method and provided a basis for the solution of the fluctuating wind load of wind turbine blades.

关 键 词：κ-ε湍流模型 三维脉动风速场 随机流场生成方法 混合模拟 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术] TK8[自动化与计算机技术—计算机科学与技术]