具有温度波动随机方程的拉格朗日色散模型

IF 0.5 4区环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES

International Journal of Environment and Pollution Pub Date : 2019-11-21 DOI:10.1504/ijep.2019.103747

A. Bisignano, E. Ferrero, S. Alessandrini

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引用次数: 1

摘要

针对拉格朗日随机模型SPRAYWEB，提出并测试了一种新的羽流上升方案。羽流上升方案基于潜在温度波动的随机微分方程和风速波动分量的方程。根据水箱实验的测量数据对新方法进行了测试（Weil等人，2002）。用统计指数和散点图对结果进行了讨论。为了进行比较，将新方案的性能与Anfossi等人先前提出的SPRAYWEB中使用的算法进行了比较。（1993）没有考虑温度波动。用新的羽流上升方案获得的结果总体上是令人满意的。垂直标准偏差与Anfossi等人（1993）方案给出的结果更为一致。

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A Lagrangian dispersion model with a stochastic equation for the temperature fluctuations

A new plume rise scheme for the Lagrangian stochastic model SPRAYWEB is developed and tested. The plume rise scheme is based on a stochastic differential equation for the potential temperature fluctuations coupled with the equations for the wind velocity fluctuation components. The new approach is tested against measured data from a water tank experiment (Weil et al., 2002). The results are discussed in terms of statistical indices and scatter plots. For the sake of comparison, the new scheme's performance is compared with the algorithm used in SPRAYWEB formerly proposed by Anfossi et al. (1993) which doesn't account for the temperature fluctuations. The results obtained with the novel plume rise scheme are generally satisfactory. A better agreement is found for the vertical standard deviation with respect to the results given by the Anfossi et al. (1993) scheme.

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来源期刊

International Journal of Environment and Pollution 环境科学-环境科学

CiteScore

1.10

自引率

0.00%

发文量

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.