Hydrodynamics of Single Cloud and Precipitation Particles
Once formed, cloud particles immediately begin to move under the action of gravity and frictional forces, the latter arising from their motion relative to the air. Some fraction of these particles will undergo complex hydrodynamic interactions causing some to collide. The particles will experience growth if the collision results in a permanent union. However, most of the time most cloud particles will simply fall with negligible interaction. It is this basic mode of isolated motion that we address ourselves to in this chapter. Furthermore, for simplicity we shall defer to Chapter 17 the consideration of the complicating influence of electrical forces.
KeywordsVortex Depression Torque Radar Hexagonal
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