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Raindrop oscillationsA model of the change in shape of a raindrop is presented. Raindrops measured by two orthogonal cameras were classified by shape and orientation to determine the nature of the oscillation. A physical model based on potential energy was then developed to study the amplitude variation of oscillating drops. The model results show that oscillations occur about the equilibrium axis ratio, but the time average axis ratio if significantly more spherical for large amplitudes because of asymmetry in the surface potential energy. A generalization of the model to oscillations produced by turbulence yields average axis ratios that are consistent with the camera measurements. The model results for average axis ratios were applied to rainfall studies with a dual polarized radar.
Document ID
19820015576
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Beard, K. V. (Illinois Univ. Urbana, IL, United States)
Date Acquired
August 10, 2013
Publication Date
March 1, 1982
Publication Information
Publication: JPL Proc. of the 2d Intern. Colloq. on Drops and Bubbles
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
82N23450
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19820015544Collected WorksProceedings of the Second International Colloquium on Drops and Bubbles
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