Year: 2013
Type: article
Abstract: In this project we propose a numerical algorithm for solving the atmospheric dispersion problem with point sources and deposition at the ground.The problem is modelled by the 3D advection-diffusion equation with delta distribution source terms, as well as variable advection speed and diffusion coefficients.We construct a finite volume scheme using a splitting approach in which the CLAWPACK software package is used as the advection solver and an implicit solver is proposed for the diffusion terms.Next, we apply the algorithm to an actual industrial scenario involving emissions of airborne zinc from a mining smelter using actual wind measurements, and then compare our results to another set of simulations obtained from an algorithm based on a Gaussian plume solver.Finally, we propose a new and efficient framework for solving the inverse source emission problem that utilizes the solution of the adjoint equations.4.1 Values of physical parameters for zinc, which actually appears in the form of a sulfate ZnSO 4 (source [27]). . . . . . . . . . . . . . . . . . . . . . . . . . . .59 4.2 Values of model parameters based on average wind velocity and recommended stability class. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60 4.3 Simulated and actual measurements of Zn at the 9 receptors for the period of June 3-July 2, 2002 using the engineering estimates for source emission rates.63 4.4 Simulated and actual measurements of Zn at the 9 receptors for the period of June 3-July 2, 2002 using source emission rates estimated by the inverse problem in [27]. . . . . . . . . .
Source: Summit (Simon Fraser University)
Author: Bamdad Hosseini
Language: English
Topic: Wind and Air Flow Studies
Subfield: Environmental Engineering
Field: Environmental Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2289149157