Open AccessDynamics of Bubbles Rising in Finite and Infinite Media
Author(s) -
Charles C. Maneri,
Peter Vassallo
Publication year - 2000
Language(s) - English
Resource type - Reports
DOI - 10.2172/821300
Subject(s) - bubble , planar , mechanics , duct (anatomy) , surface tension , physics , computer science , thermodynamics , computer graphics (images) , medicine , pathology
The dynamic behavior of single bubbles rising in quiescent liquid Suva (R134a) in a duct has been examined through the use of a high speed video system. Size, shape and velocity measurements obtained with the video system reveal a wide variety of characteristics for the bubbles as they rise in both finite and infinite media. This data, coupled with previously published data for other working fluids, has been used to assess and extend a rise velocity model given by Fan and Tsuchiya. As a result of this assessment, a new rise velocity model has been developed which maintains the physically consistent characteristics of the surface tension in the distorted bubbly regime. In addition, the model is unique in that it covers the entire range of bubble sizes contained in the spherical, distorted and planar slug regimes