Collisions of Cloud Droplets in a Turbulent Flow. Part V: Application of Detailed Tables of Turbulent Collision Rate Enhancement to Simulation of Droplet Spectra Evolution
Collisions of Cloud Droplets in a Turbulent Flow. Part V: Application of Detailed Tables of Turbulent Collision Rate Enhancement to Simulation of Droplet Spectra Evolution
复制标题
湍流中云滴的碰撞。
DOI：
10.1175/2007jas2358.1
复制
发表时间：
2008
影响因子：
3.1
通讯作者：
H. Krugliak
中科院分区：
文献类型：
--
作者：
M. Pinsky;A. Khain;H. Krugliak
本研究是一系列研究的延续，这些研究致力于调查具有典型真实的云特征的湍流中的云滴碰撞。详细的表格中的碰撞内核和碰撞效率计算液滴的流体动力学相互作用的存在。这些表是针对大范围的湍流参数计算的。为了说明液滴尺寸分布（DSD）演化的灵敏度的碰撞率的增加，DSD演化的模拟进行求解的随机动力学方程的碰撞。研究结果可应用于云建模。碰撞效率和碰撞核的表格可根据要求提供。最后对湍流云中水滴与冰水凝物碰撞的一些尚未解决的问题进行了讨论。
The present study is a continuation of the series of studies dedicated to the investigation of cloud droplet collisions in turbulent flow with characteristics that are typical of real clouds. Detailed tables of collision kernels and collision efficiencies calculated in the presence of hydrodynamic interaction of droplets are presented. These tables were calculated for a wide range of turbulent parameters. To illustrate the sensitivity of droplet size distribution (DSD) evolution to the turbulence-induced increase in the collision rate, simulations of DSD evolution are preformed by solving the stochastic kinetic equation for collisions. The results can be applied to cloud modeling. The tables of collision efficiencies and collision kernels are available upon request. Some unsolved problems related to collisions of droplets and ice hydrometeors in turbulent clouds are discussed in the conclusion.