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在火电厂中,环境风的速度和方向皆会对间接空冷塔的冷却性能产生重要影响,本文为了研究环境自然风对火电厂间接空冷塔冷却性能的影响,建立空冷塔入口处导风板的温度场和动力场三维数值计算模型,采用SRF模型模拟导风板旋转,对塔内空气动力场及温度场进行三维数值模拟,获得了相应的速度场和温度场.将数值模拟与实验结果进行对比,得到侧风下导风板数量及旋转速度对间接空冷塔的冷却性能影响规律.研究表明,不加导风板,在5 m/s风速下,空冷塔冷却性能严重恶化,设置8块导风板后,换热量可提高15.08％,并且将导风板旋转后,换热量可以进一步提高,换热量随着旋转速度的增加呈现先减小后增大的趋势.“,”In thermal power plant,the speed and direction of environmental wind will have an important influence on the cooling performance of indirect air cooling tower.In order to study the influence of natural wind on the cooling performance of indirect air cooling tower in thermal power plant,the three-dimensional numerical calculation model on temperature field and dynamic field of wind guide-plate at the entrance of the air cooling tower is established.The SRF model is used to simulate the rotation of the wind guide plate,the 3D numerical simulation of tower aerodynamic field and temperature field,the velocity field and temperature field.Numerical simulation and experimental results were compared under crosswind guide board air quantity and rotational speed of indirect air cooling tower cooling performance influence.It shows that air cooling tower cooling performance deterioration without the wind guide plateat 5 m/s wind speed,and heat transfer can improve 15.08％ when 8 guide-plateswere set.When the air guide plate is rotated,the heat exchange capacity can be further improved,and the heat exchange capacity decreases and then increases with the increase of the rotational speed.