Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Numerical Simulation of Pollutant Dispersion in the Atmosphere
Submission Author:
Letícia Mayumi Doy Okamoto , PR
Co-Authors:
Gustavo Naozuka, Neyva Romeiro, Eliandro Cirilo, Paulo Laerte NATTI, Letícia Mayumi Doy Okamoto
Presenter: Letícia Mayumi Doy Okamoto
doi://10.26678/ABCM.COBEM2017.COB17-1519
Abstract
Air pollution can cause both environmental and human health damage, so it is necessary to study the best way these pollutants can be emitted, predicting how their effects will be. For this, a scenario involving a pollution source is modeled and tests are carried out on how the emission of pollutants in this area would behave, using different heights for the pollution source. In this sense, this work proposes a way of modeling complex two-dimensional meshes with the use of elliptic equations for generating meshes in the curvilinear coordinate system, in which the computational grid coincides with problem geometry, which makes computational processing more suitable. For a better representation of the domain, the multiblock technique will be used too. Similarly, curvilinear coordinates will be used for the discretization of the Navier-Stokes and transport of pollutants equations, using first order upwind scheme in the convective term. To test the proposed method, three test cases were performed varying the relation between the height of chimney and obstacle that made up their geometries. Through the performed tests, it was verified that the results obtained are satisfactory.
Keywords
Pollutant dispersion, Atmospheric pollution, Numerical simulation, multiblock technique
