聚光镜场和风环境耦合作用机理研究

摘 要：综合现场实测、风洞实验和数值有限元模拟方法，开展了电站聚光镜场和近地面风环境相互耦合作用机理研究。进行了聚光器场的风场实时监测，分析获得镜场近地面的风速剖面、湍流度剖面、湍流强度、湍流积分尺度、湍流风速谱和峰值因子等参数，总结聚光器场的强季风场的规律和特征。进行了聚光器风荷载边界条件的原型实测和风洞实验，获得强季风作用下的聚光器脉动风压分布规律和特征，获得脉动风压功率谱密度，进而获得聚光器的风荷载边界条件。

关键词：聚光镜场 风场 现场实测 风洞实验 数值有限元方法

Abstract：Field measurements， wind tunnel experiments and numerical finite element method are applied comprehensively to analyze coupling mechanism of concentrating solar collector field and wind flow around it. Atmospheric boundary layer wind flow around the field is monitored and analyzed. Wind characteristics parameters are presented including turbulence intensity， gust factor， wind speed profile and turbulence intensity profile. Wind loads on concentrating solar collectors are tested by field measurements， wind tunnel experiments and numerical finite element method. Wind load coefficients of the collectors are presented as a function of pitch angles. Characteristics of wind pressure distribution and pressure spectra are analyzed including wind pressure contours and normalized power spectra of fluctuating pressures and wind speed.

Key Words：Concentrating solar collector field；Wind flow；Field measurements；Wind tunnel experiment；Numerical finite element method

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