Transport and Diffusion Solutions for Obscuration using the XM-825 Smoke Munition.
ARMY ELECTRONICS RESEARCH AND DEVELOPMENT COMMAND WSMR NM ATMOSPHERIC SCIENCES LAB
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The practical problem of downwind transport and diffusion of smoke from an array of sources with an arbitrary distribution of positions and emission strengths may be dealt with by integrating the distributions from the individual point sources. Identifying the effects of a number of continuous emissions may be carried out algebraically by superimposing the alongwind concentrations from successive sources to determine the cumulative contributions at some finite distance downwind. The transport and diffusion area source characteristics of the candidate smoke projectile XM-825 have been studied, and the resultant attributes of the multipoint-source, chemically generated smoke have been modeled. Three schemes are considered and compared to experimental data with respect to the integrated line of sight concentrations and crosswind integrated concentrations downwind of the resultant area source. Author