New Technique for Solving the Advection-diffusion Equation in ThreeDimensions using Laplace and Fourier Transforms

Journal of Applied & Computational Mathematics

article

Essa KSM¹  Marrouf AA¹  El-Otaify MS¹  Mohamed AS²  Ismail G² 

[1] Mathematics and Theoretical Physics;Department of Mathematics, Faculty of Science, Zagazig University

关键词: Advection-diffusion equation;    Laplace transform;    Fourier transform;    Bessel function;   

DOI  :  10.4172/2168-9679.1000272

来源: Hilaris Publisher

【 摘 要 】

A steady-state three-dimensional mathematical model for the dispersion of pollutants from a continuously emitting ground point source in moderated winds is formulated by considering the eddy diffusivity as a power law profile of vertical height. The advection along the mean wind and the diffusion in crosswind and vertical directions was accounted. The closed form analytical solution of the proposed problem has obtained using the methods of Laplace and Fourier transforms. The analytical model is compared with data collected from nine experiments conducted at Inshas, Cairo (Egypt). The model shows a best agreement between observed and calculated concentration.

【 授权许可】

Unknown