Raindrop Oscillations: Evaluation of a Potential Flow Model with GravitySource: Journal of the Atmospheric Sciences:;1984:;Volume( 041 ):;issue: 010::page 1765Author:Beard, Kenneth V.
DOI: 10.1175/1520-0469(1984)041<1765:ROEOAP>2.0.CO;2Publisher: American Meteorological Society
Abstract: Potential flow oscillations about an equilibrium raindrop distortion were modeled for ellipsoidal variations driven by changes in surface and gravitational potential energy with linear dissipation of kinetic energy. The model was found to be quantitatively similar to the Navier-Stokes results of G. B. Foote for axisymmetric oscillations without gravity. Computed frequencies and average axis ratios for vertical and horizontal oscillations with gravity were compared to wind tunnel observations of oscillating water drops and raindrop camera data. Simple formulas with good accuracy were developed for the time variation and time average axis ratios as a function of oscillation amplitude.
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| contributor author | Beard, Kenneth V. | |
| date accessioned | 2017-06-09T14:24:53Z | |
| date available | 2017-06-09T14:24:53Z | |
| date copyright | 1984/05/01 | |
| date issued | 1984 | |
| identifier issn | 0022-4928 | |
| identifier other | ams-18843.pdf | |
| identifier uri | http://onlinelibrary.yabesh.ir/handle/yetl/4154893 | |
| description abstract | Potential flow oscillations about an equilibrium raindrop distortion were modeled for ellipsoidal variations driven by changes in surface and gravitational potential energy with linear dissipation of kinetic energy. The model was found to be quantitatively similar to the Navier-Stokes results of G. B. Foote for axisymmetric oscillations without gravity. Computed frequencies and average axis ratios for vertical and horizontal oscillations with gravity were compared to wind tunnel observations of oscillating water drops and raindrop camera data. Simple formulas with good accuracy were developed for the time variation and time average axis ratios as a function of oscillation amplitude. | |
| publisher | American Meteorological Society | |
| title | Raindrop Oscillations: Evaluation of a Potential Flow Model with Gravity | |
| type | Journal Paper | |
| journal volume | 41 | |
| journal issue | 10 | |
| journal title | Journal of the Atmospheric Sciences | |
| identifier doi | 10.1175/1520-0469(1984)041<1765:ROEOAP>2.0.CO;2 | |
| journal fristpage | 1765 | |
| journal lastpage | 1774 | |
| tree | Journal of the Atmospheric Sciences:;1984:;Volume( 041 ):;issue: 010 | |
| contenttype | Fulltext |