Preliminary Assessment of the Importance of Turbulent Coagulation in the Kuwaiti Oil Fires
Technical rept. 1 Apr 1992-30 Jun 1993
INSTITUTE FOR DEFENSE ANALYSES ALEXANDRIA VA
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This study provides a mathematical determination of the spatial distribution of aerosols due to turbulent shear coagulation and turbulent inertial coagulation, as applied to the conditions of the Kuwaiti Oil Fires KOF of 1991. Using an approximation from a forest fire for the normalized size distribution of aerosols, the downstream particle concentration is found by the concurrent solution of the coagulations kinetics combined with turbulent atmospheric diffusion. The result shows the explicit dependence of the concentration on the following principal parameters turbulent energy dissipation rate, turbulent diffusion constant, average wind speed, mass ejection from a well, Kolmogorov time scale for turbulence, and Kolmogorov length scale for turbulence. For every large values of turbulent energy dissipation rate, turbulent inertial coagulation is more effective than turbulent shear coagulation in particle growth. The spatial dependence of concentration attributed to turbulent coagulation may vary considerably. Depending on the choice of parameters, the importance of turbulent coagulation in particle transport processes may extend from less than a kilometer to tens of kilometers.
- Safety Engineering
- Air Pollution and Control