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Title: Removal model suitable for air pollutants emitted from an elevated source
Authors: Arora U.
Gakkhar S.
Gupta R.S.
Published in: Applied Mathematical Modelling
Abstract: A time-dependent removal model for air pollutants from an elevated source is presented. The model considers the first-order (delayed) removal. The deposition of pollutants is accounted for by applying the absorptive boundary on the ground surface. The transport equation representing instantaneous and delayed removal is solved numerically by the fractional step method. A Lagrangian (moving cell) frame is used to solve the advection step, while a Eulerian (multibox) frame is applied to the diffusion and removal processes. Variable wind velocity and coefficient of diffusivity are considered. Velocity profile is approximated by a step function, which provides compatibility with the Eulerian grid spacing. Variable vertical grid spacing is considered to get good resolution concentration profile near the source. © 1991.
Citation: Applied Mathematical Modelling (1991), 15(7): 386-389
Issue Date: 1991
Keywords: advection
fractional step method
ground deposition
variable wind velocity
ISSN: 0307904X
Author Scopus IDs: 57197190456
Author Affiliations: Arora, U., Department of Mathematics, U.O.R. Roorkee, India
Gakkhar, S., Department of Mathematics, U.O.R. Roorkee, India
Gupta, R.S., Department of Mathematics, U.O.R. Roorkee, India
Corresponding Author: Arora, U.
Appears in Collections:Journal Publications [MA]

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