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采用考虑自然雾对太阳辐射的衰减、散射作用进而修正的太阳辐射模型,且考虑含雾湿空气条件下雾滴、湿空气与目标表面的换热机理及表面辐射换热、对流换热,建立了含雾湿空气条件下地面目标热特征分析模型,采用该模型计算分析了雾能见度、风速对目标表面温度的影响,分析了典型雾天条件下目标表面温度变化特性。结果表明:在雾出现时段,雾能见度越小或风速越大,目标表面温度值相对越低;考虑雾对目标表面热特征的影响具有很大的必要性。
The solar radiation model considering the attenuation and scattering of solar radiation by natural fog and its correction is adopted. Considering the heat transfer mechanism of the droplets, the wet air and the target surface and the surface radiation heat transfer, the convective heat transfer is established Based on the model, the influence of fog visibility and wind velocity on the target surface temperature was calculated and analyzed, and the characteristics of target surface temperature under typical fog days were analyzed. The results show that the smaller the fog visibility or the larger the wind speed, the lower the target surface temperature during the fog emergence period. Considering the influence of fog on the thermal characteristics of the target surface is of great necessity.