随时间变化的平流扩散方程的一个解

IF 0.5 4区 环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES
T. Tirabassi, Everson Jonatha Gomes da Silva, D. Buske, M. T. Vilhena
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引用次数: 0

摘要

我们提出了一个考虑风廓线和涡旋扩散率时间依赖性的解析解。该解决方案接受在一个有限的行星边界层中的任何风和涡系数扩散剖面。该解决方案是基于在截断序列中扩展污染物浓度的分解方法的思想。这就产生了一组解已知的递归方程。用广义积分拉普拉斯变换(GILTT)方法求解了该集合的每一个方程。通过将模型预测与陆上风向分散(OLAD)实验数据集进行比较,验证了该解决方案代表真实情况的能力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A solution of the time-dependent advection-diffusion equation
We present an analytical solution that considers time dependence in the wind profile and the eddy diffusivity. The solution accepts any profiles of wind and eddy coefficient diffusions in a limited planetary boundary layer. The solution is based on the idea of a decomposition method upon expanding the pollutant concentration in a truncated series. This produces a set of recursive equations whose solutions are known. Each equation of this set is solved by the generalised integral Laplace transform technique (GILTT) method. The solution's ability to represent real situations was checked, comparing model predictions with the over-land along-wind dispersion (OLAD) experimental dataset.
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来源期刊
CiteScore
1.10
自引率
0.00%
发文量
3
审稿时长
4.5 months
期刊介绍: IJEP provides an international forum in the field of environment and pollution and addresses early and medium-term challenges involving scientific prediction, modelling and assessment. It focuses on ground-breaking research in the science of environmental pollution, at the early scientific stage. It is one of three key journals which together offer complete coverage of environmental issues: IJETM focuses on technical/engineering, policy and management solutions for environmental problems, and IJGEnvI focuses on future, longer-term environmental scenarios, ecological economics, climate change and biodiversity.
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