The Unsteady State Dispersion of Pollutant Under the Change in Wind Velocity & Diffusivity While Considering Delayed Removal Mechanism

  • VIVEK JOSEPH Department of Mathematics Lucknow Christian Degree College, Lucknow
  • Manju Agarwal Department of Mathematics & Astronomy University of Lucknow, Lucknow

Abstract

A two dimensional unsteady state dispersion of pollutant from different types
of point source i.e. instantaneous and step function type has been considered in
the present study. In the region of interest we initially assumed the wind speed
and diffusivity to be constant in the first interval and thereafter in second interval
due to the change in wind condition and diffusivity they are considered
to vary along the vertical height. Further, we also considered a delayed removal
mechanism in this situation. The present analytical model is used to obtain a
crosswind integrated concentration. The results so obtained are useful in understanding
the dispersion of pollutant when the wind velocity and coefficient of
diffusivity changes with time, especially in case of accidental release.

Published
2022-11-08
Issue
Vol 32 No 01 (2018): JOURNAL OF NATIONAL ACADEMY OF MATHEMATICS INDIA
Section
Articles

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