Integral Model of a Multiphase Plume in Quiescent Stratification
Publication: Journal of Hydraulic Engineering
Volume 133, Issue 1
Abstract
The writers present a one-dimensional integral model to describe multiphase plumes discharged to quiescent stratified receiving waters. The model includes an empirical submodel for detrainment, and the capability to include dispersed phase dissolution. Model equations are formulated by conservation of mass, momentum, heat, dissolved species concentration, and salinity, and allow the tracking of dissolved material and changes in plume density due to solute density effects. The detrainment (or peeling) flux, , is assumed to be a function of the dispersed phase slip velocity, , the integrated plume buoyancy, , and the momentum of the entrained plume fluid, characterized by the fluid velocity, , given by the general relationship . The parameter is calibrated to laboratory experimental data. Because is based on a force balance, this algorithm allows numerical models to reproduce a wide range of characteristic plume behavior. Such a predictive algorithm is important for applying models to field scale plumes, especially where chemical processes within the plume may alter plume buoyancy (and hence peeling behavior), as in the case of a droplet plume used for ocean sequestration of .
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Acknowledgments
This study was supported by the National Energy Technology Laboratory, U.S. Department of Energy (Grant No. DOEDE-FG26-98FT40334) and the Ocean Carbon Sequestration Program, Biological and Environmental Research (BER), U.S. Department of Energy (Grant No. DOEDE-FG02-01ER63078). MIT graduate student Tim Harrison helped build and conduct some of the experiments.
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© 2007 ASCE.
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Received: Mar 1, 2004
Accepted: Feb 7, 2006
Published online: Jan 1, 2007
Published in print: Jan 2007
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