Direct Lagrangian tracking simulation of droplet growth in vertically developing cloud
Direct Lagrangian tracking simulation of droplet growth in vertically developing cloud
复制标题
垂直发展云中液滴生长的直接拉格朗日跟踪模拟
DOI：
10.5194/acp-18-16619-2018
复制
发表时间：
2018
影响因子：
6.3
通讯作者：
R. Onishi
中科院分区：
文献类型：
--
作者：
Y. Kunishima;R. Onishi
抽象的。我们提出了一个直接拉格朗日模拟计算关键暖雨
垂直发展云的过程，包括云凝结核
(CCN)活化、凝聚生长、碰撞生长和液滴
重力沉降这个模拟，跟踪运动和生长
的单个粒子，适用于运动学模拟的一个
极端垂直拉长准一维域，之后，
结果进行了比较，从光谱箱模型，
采用传统的欧拉框架。比较结果，其中
证实拉格朗日函数和
传统的光谱箱模拟，也表明，拉格朗日
模拟是免费的，从数值扩散中发现的频谱箱
仿真在分析了表面的拉格朗日统计量后，
雨滴到达地面后，回溯轨迹的研究揭示了
表面雨滴的拉格朗日统计包含了
天空中雨滴的生长就像雪晶的形状一样。
Abstract. We present a direct Lagrangian simulation that computes key warm-rain
processes in a vertically developing cloud, including cloud condensation nuclei
(CCN) activation, condensational growth, collisional growth, and droplet
gravitational settling. This simulation, which tracks the motion and growth
of individual particles, is applied to a kinematic simulation of an
extremely vertically elongated quasi-one-dimensional domain, after which the
results are compared with those obtained from a spectral-bin model, which
adopts the conventional Eulerian framework. The comparison results, which
confirm good bulk statistical agreement between the Lagrangian and
conventional spectral-bin simulations, also show that the Lagrangian
simulation is free from the numerical diffusion found in the spectral-bin
simulation. After analyzing the Lagrangian statistics of the surface
raindrops that reach the ground surface, back-trajectory scrutiny reveals
that the Lagrangian statistics of surface raindrops contains the information
about the sky where the raindrops grow like the shape does for snow crystals.
影响因子：
4.1
作者：
Morinishi, Y;Lund, TS;Moin, P
通讯作者：
Moin, P