Near-source atmospheric pollutant dispersion using the new GILTT method

被引：50

作者：

Moreira, DM

Vilhena, MT

Tirabassi, T

Buske, D

Cotta, R

机构：

[1] ULBRA, PPGEAM, BR-92420280 Canoas, RS, Brazil

[2] Univ Fed Rio Grande Sul, PROMEC, Porto Alegre, RS, Brazil

[3] CNR, Inst ISAC, I-40126 Bologna, Italy

[4] Univ Fed Rio de Janeiro, Rio De Janeiro, Brazil

来源：

ATMOSPHERIC ENVIRONMENT | 2005年 / 39卷 / 34期

关键词：

GILTT; Laplace transform; atmospheric dispersion; analytical solution; advection-diffusion equation; planetary boundary layer;

D O I：

10.1016/j.atmosenv.2005.07.008

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this work we present the GILTT method for the solution of the advection-diffusion equation utilizing an eddy diffusivity depending on source distance. With this new approach, where no approximation is made along the solution derivation so that it is an exact solution except for the round-off error due to the stepwise approximation of the eddy diffusivity in the x variable, it is possible to simulate the pollutant dispersion in the Planetary Boundary Layer. The present study reinforces that the inclusion of the memory effect, important in near regions from an elevated continuous point source, improves the description of the turbulent transport process of atmospheric pollutants. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：6289 / 6294

页数：6

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