1Department of Mathematics, Sai Vidya Institute of Technology, Rajanukunte, Bangalore-560 064, India. Email: lncspcms@gmail.com
2Department of Mathematics, RNS Institute of Technology, Channasandra, Bangalore -560 098, India. Email: msuresha2006@gmail.com
3Department of Mathematics, Siddaganga Institute of Technology, Tumkur – 572103, India. Email: msp_maths@rediffmail.com
4Department of Mathematics, Raja Rajeswari College of Engineering, Bangalore -560 074, India. Email: pandurangappa_c@yahoo.co.in
Online published on 16 January, 2015.
In this paper, we study a time dependent advection diffusion model for computation of the ambient air concentration of pollutants emitted from an area source. This model deals the dispersion of both primary and secondary pollutants emitted from an area with mesoscale wind along with large scale wind. The model takes into account the removal of pollutants through chemical reaction and gravitational settling. The obtained partial differential equation is solved using Crank-Nicolson implicit finite difference scheme under stability dependent meteorological parameters involved in wind velocites and eddy diffusivity profiles.
Atmospheric dispersion, Gaseous pollutant, Area source, urban heat island, diffusion coefficient
