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用幂函数分析了雨滴最终速度与雨滴直径之间的关系,并从贝斯特的雨滴直径分布函数出发导出了雨滴最终速度分布函数。分析表明,当雨强较小时,雨滴最终速度服从韦伯分布;当雨强很大时,则服从截断的韦伯分布。最后,讨论了雨滴最终速度分布的尺度参数和形状参数,两者均取决于降雨强度和降雨类型。
The relationship between the final velocity of raindrops and the diameter of raindrops was analyzed by the power function, and the final velocity distribution function of raindrops was derived from the maximum raindrop diameter distribution function. The analysis shows that when the rainfall intensity is small, the final velocity of the raindrop obeys the Weber distribution, and when the rainfall intensity is large, it obeys the cut Weber distribution. Finally, the scale parameters and shape parameters of the final raindrop velocity distribution are discussed, both of which depend on the rainfall intensity and type of rainfall.