Density Currents in Pollutant Transport and Mixingby Gerhard H. Jirka, Cornell Univ, Ithaca, United States,
Paul J. Akar, Cornell Univ, Ithaca, United States,
Abstract: A buoyant spreading model for the current-advected plume is formulated including several distinct mechanisms: convective spreading, interfacial friction spreading, entrainment at the density front, shear flow entrainment, wind-induced entrainment, and surface heat exchange. The buoyant spreading model is implemented within the Cornell Mixing Zone Expert System (CORMIX), and comparisons with available laboratory and field data demonstrate the substantial role of density currents in pollutant transport and mixing.
Subject Headings: Density currents | Entrainment | Shear flow | Hydrologic models | Plumes | Friction | Expert systems | Pollutants
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