Particle Dispersion in the Neutral Atmospheric Surface Layer

被引：0
|
作者：
Sergey Belan
Vladimir Lebedev
Gregory Falkovich
机构：
[1] Moscow Institute of Physics and Technology,
[2] Landau Institute for Theoretical Physics,undefined
[3] Institute for Information Transmission Problems,undefined
[4] Weizmann Institute of Science,undefined
来源：
Boundary-Layer Meteorology | 2016年 / 159卷
关键词：
Analytical solution; Dispersion theory; Heavy particles; Settling velocity;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We address theoretically the longstanding problem of particle dispersion in the lower atmosphere. The evolution of particle concentration under an absorbing boundary condition at the ground is described. We derive a close-form solution for the downwind surface density of deposited particles and find how the number of airborne particles decreases with time. The problem of the plume formation above the extended surface source is also solved analytically. At the end, we show how turbophoresis modifies the mean settling velocity of particles.
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页码：23 / 40
页数：17
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