A new analytical approach to simulate the pollutant dispersion in the PBL
A new analytical approach to simulate the pollutant dispersion in the PBL
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DOI：
10.1016/j.atmosenv.2005.01.003
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发表时间：
2005-04-01
影响因子：
5
通讯作者：
Buske, D
中科院分区：
文献类型：
--
作者：
Wortmann, S;Vilhena, MT;Buske, D
在这项工作中，我们提出了一种解决平流扩散方程的新分析方法，以模拟行星边界层中的污染物扩散。在该方法中，通过广义积分变换变换后的平流扩散方程通过拉普拉斯变换技术和解析反演来求解，并且被视为非高斯方程。这里没有进行近似，因此除了舍入误差之外，可以获得精确的解。本模型已使用哥本哈根实验在中等不稳定的条件下进行了评估。定性和定量地讨论了模型的性能。考虑到扩散实验的数据，所提出的模型表现得非常好。 (c) 2005 Elsevier Ltd. 保留所有权利。
In this work, we present a new analytical approach for the solution of the advection-diffusion equation to simulate the pollutant dispersion in the planetary boundary layer. In this method the advection-diffusion equation after transformation by a generalized integral transform is solved by the Laplace transform technique with analytical inversion and is seen to be non-Gaussian. No approximation is made in this so that an exact solution is obtained except for the round-off error. The present model has been evaluated in moderately unstable conditions using the Copenhagen experiment. The performance of the model is discussed qualitatively as well as quantitatively. The proposed model has performed very well with the data from the diffusion experiment considered. (c) 2005 Elsevier Ltd. All rights reserved.