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On the prediction of the wind field in complex orography for accident analysis

机译:关于复杂地区风场预测事故分析

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The work presented in this paper is part of a program to develop a method for stategic planning during industrial emergencies. The paper discusses the simulation of the wind field, for use in pollutant dispersal predictions, over a mountainous coastal egion, 100 by 100 km, in north-west Wales, UK. A simple null-divergence code (AVACTA II) has been modified to allow initialization in the absence of vertical profiles of wind. The input to the simulations is limited to data that is readily available in real time, i.e.ground level wind observations and the geostrophic wind, calculated from surface pressure charts. The initialization of the wind field is of paramount importance for the accuracy of the solution obtained after the minimization of the divergence. Simulations are initialized using the geostrophic wind only, and also with the inclusion of ground level observations. The results are compared to simulations previded by a numerical model that solves the non-linear equations of motion and thermodynamics.
机译:本文提出的工作是开发工业紧急情况期间出于出言规划方法的计划的一部分。本文讨论了风电场的模拟,用于污染物分散预测,在英国西北威尔士山区沿海egion,100公里。已经修改了一个简单的空分流代码(AVACTA II)以允许在没有垂直风格的情况下初始化。模拟的输入仅限于实时可用的数据,即地面水平的风视和地球滴风,从表面压力图计算。风电场的初始化对于在最小化发散后获得的溶液的准确性至关重要。使用热风型风初始化模拟,并含有地面观察。将结果与通过解决运动和热力学的非线性方程的数值模型进行比较。

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