聚光鏡場和風環境耦合作用機理研究

黃湘　王志峰　宮博　吳治永　白鳳武

摘 要：綜合現場實測、風洞實驗和數值有限元模擬方法，開展了電站聚光鏡場和近地面風環境相互耦合作用機理研究。進行了聚光器場的風場實時監測，分析獲得鏡場近地面的風速剖面、湍流度剖面、湍流強度、湍流積分尺度、湍流風速譜和峰值因子等參數，總結聚光器場的強季風場的規律和特征。進行了聚光器風荷載邊界條件的原型實測和風洞實驗，獲得強季風作用下的聚光器脈動風壓分布規律和特征，獲得脈動風壓功率譜密度，進而獲得聚光器的風荷載邊界條件。

關鍵詞：聚光鏡場 風場 現場實測 風洞實驗 數值有限元方法

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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