Virtual Assessment of Air Pollution Dispersion from Anthropogenic Sudden Explosion
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Science Publications
Abstract
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The control of air pollutants from anthropogenic sources seems
almost impossible due to numerous influencing factors present in the
atmosphere. In this study, we carried out a virtual mathematical
experimentation using Math CAD, Mat lab and analytical approximation to
estimate the dimensional impact of initial pollutant plume cloud from a
sudden volcanic blast and the dynamics of its wind field. The high point of
the experimentation is the period of the first one-tenth of a second (1 decisecond)
to 1 min (60 s) of the blast at the point source. We also assessed the
long range air pollution dispersion within the first 1 to 10 min of plume
cloud released under practical assumptions. The model revealed a plume
cloud impact of 6.8×107 μgm−3 in the first 1 millisecond (0.01 s) which
decayed suddenly to a value of 1.7×107 μgm−3 in the first 1 deci-second (0.1
s). The impact concentration at the point source by the end of the first second
(1.0 s) was 3.2×105 μgm−3 which implied a 99.5% sudden decay when
compared with 0.01 s concentration value at the emission point source. It is
observed that air pollutants released from explosives/blasts get transported
into the atmosphere in the first few seconds by forceful injection instead of
by gradual dispersion as is the case with normal air pollutants plume
releases. A mathematical control process was propounded (which is still
subject to further research) to reduce the quick flow of air pollutants
Keywords
QC Physics