Analytical and Experimental Study to Improve Computer Models for Mixing and Dilution of Soluble Hazardous Chemicals.
Final rept. Sep 79-Aug 82,
SOUTHWEST RESEARCH INST SAN ANTONIO TX
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Computerized models are developed to predict the concentration of soluble chemicals in various types of water bodies from accidental spills from, say, punctured ship tanks. Separate models are developed for continuous and instantaneous spills. Positively- and negatively-buoyant chemicals are considered, and the initial mixing and dilution due to gravitational and momentum effects are included. For downstream regions, turbulent mixing and dispersion are modeled as well. If the spill is in a tidal river, time-varying effects are included, as is the possibility that the water may pass by the spill site more than once. Predictions of the models are compared to the results of tests conducted in a large laboratory channel, with generally good agreement. The tests cover a wide range of chemical densities, spill rates spill volumes, and channel water velocities. Extensive data on concentration distributions are reported. Author
- Water Pollution and Control