云闪放电过程中雨滴增长的数值试验研究

利用二维数值模式，对雨滴在云闪放电条件下的增长进行了试验研究。分别讨论了在不同的电场、荷电量和电场角度时雨滴的增长演变及其运动状况。结果表明：二维模式中闪电放电对雨滴增长的影响与一维有明显不同。电场和荷电量作单因子变化时，雨滴在二维中随参量取值的增加变化较大。两者同时变化时，其乘积愈大雨滴增长幅度愈大。雨滴对电场角度绝对值变化的反应较为缓慢。其运动轨迹在不同的条件下均为准周期的。

THE NUMERICAL EXPERIMENTS OF RAINDROP GROWTH IN INTRA-CLOUD LIGHTNING DISCHARGE PROCESSES

The numerical experiments of raindrop growth under the condition of intra-cloud lightning discharge and the raindrop growth evolution series and motion trails on different electric, charge count and electrical angle are studied in this paper. The results show that the implication on raindrop growth under two dimension model is different from under one dimension .The growth with different parameters are very fast when electric field and charge count change. If two parameters change in same step, the larger multiplication values are, the larger raindrop growth amplitude are. The responses of raindrop on the absolute change of electric field angle are week. The raindrop trails under different conditions are quasi-periodic.