Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

A Study on the Temperature Variation of Rise Velocity for Large Clean Bubbles

A Study on the Temperature Variation of Rise Velocity for Large Clean Bubbles A series of microphysical laboratory experiments studying the hydrodynamics of single bubbles were conducted to measure the variation of rise velocity, V B , with temperature, T, and radius, r. Bubbles with an equivalent spherical radius between 377 and 4500 μμ m were studied for T varying between 0°° and 40°°C. While for nonoscillating bubbles V B increases with T ; due to the significance of oscillations, V B decreases with T for oscillating bubbles, in conjunction with an increase in trajectory oscillations with T. Using observations from this study and data from other researchers, a three-part parameterization of V B ( r, T ) is proposed with transitions at Re == 1 and the onset of oscillations, where Re is the Reynolds number. The T for the transition to oscillatory behavior was found to vary linearly with r. An empirical parameterization of V B ( r, T ) for oscillatory and nonoscillatory bubbles that correctly incorporates the effect of T is presented. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Atmospheric and Oceanic Technology American Meteorological Society

A Study on the Temperature Variation of Rise Velocity for Large Clean Bubbles

Loading next page...
 
/lp/american-meteorological-society/a-study-on-the-temperature-variation-of-rise-velocity-for-large-clean-Z1unMt6fXT

References (21)

Publisher
American Meteorological Society
Copyright
Copyright © 1998 American Meteorological Society
ISSN
1520-0426
DOI
10.1175/1520-0426(2000)017<1392:ASOTTV>2.0.CO;2
Publisher site
See Article on Publisher Site

Abstract

A series of microphysical laboratory experiments studying the hydrodynamics of single bubbles were conducted to measure the variation of rise velocity, V B , with temperature, T, and radius, r. Bubbles with an equivalent spherical radius between 377 and 4500 μμ m were studied for T varying between 0°° and 40°°C. While for nonoscillating bubbles V B increases with T ; due to the significance of oscillations, V B decreases with T for oscillating bubbles, in conjunction with an increase in trajectory oscillations with T. Using observations from this study and data from other researchers, a three-part parameterization of V B ( r, T ) is proposed with transitions at Re == 1 and the onset of oscillations, where Re is the Reynolds number. The T for the transition to oscillatory behavior was found to vary linearly with r. An empirical parameterization of V B ( r, T ) for oscillatory and nonoscillatory bubbles that correctly incorporates the effect of T is presented.

Journal

Journal of Atmospheric and Oceanic TechnologyAmerican Meteorological Society

Published: Sep 4, 1998

There are no references for this article.