摘要
通过对雨滴降落时空气阻力系数的拟合及修正，采用数值计算的四阶龙格—库塔（Ｒｕｎｇｅ—Ｋｕｔａ）法求解了雨滴降落运动微分方程。模拟的０．５～６ｍｍ直径雨滴极限降落速度与实测的雨滴降落速度基本一致。并分析给出了形式简单、便于应用的雨滴极限降落速度分段计算公式。
By modifying the air resistence coefficienx of the falling rain drops, the motion different equation of the falling rain drops was resolved by means of fourth order Runge-kutta method. The results shown that the modeled and measured limit velocities of the rain drops which diameter are 0.5～6mm were uniform, last, the simple formulas on fall the relocity of the rain drops are analysed and given.
