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RESEARCH PAPERS

Entrainment and Mixing in Vertical Buoyant Light-Gas Plumes

[+] Author and Article Information
R. K. Kumar, H. W. Chiang, F. Kalos

AECL Research, Whiteshell Laboratories, Pinawa, Manitoba ROE 1L0, Canada

J. Energy Resour. Technol 118(1), 77-81 (Mar 01, 1996) (5 pages) doi:10.1115/1.2792697 History: Received October 10, 1994; Revised December 07, 1995; Online December 05, 2007

Abstract

A simple model is developed to determine the entrainment coefficient and the spread of a light-gas plume in a quiescent atmosphere. Experiments performed with low-velocity saltwater/freshwater and helium-in-air jets indicate that buoyant gas plumes spread significantly faster than thermal plumes. The calculated effluent concentrations are in excellent agreement with those measured when an entrainment coefficient of 0.15 is used in the plume equations. This is significantly higher than the entrainment coefficients of 0.075 to 0.093 reported for thermal plumes.

Copyright © 1996 by The American Society of Mechanical Engineers
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