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Numerical simulation of atmospheric turbulence

机译:大气湍流的数值模拟

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摘要

A review is presented on the application of LES to a simulation of turbulence in the atmospheric boundary layer. First we discuss some historical facts which are interesting from a general perspective because the field of turbulence simulation has its origin innumerical weather forecasting. Instead of giving a standard review of the technique of LES and its various details, we continue by first highlighting some successes of LES in the atmospheric boundary layer and then some failures. The successes are the simulation of the Convective Boundary Layer (CBL) and the Neutral Boundary Layer (NBL). The failures are the simulation of the horizontal velocity fluctuations and the behaviour of the skewness of vertical velocity fluctuations near the surface both in the CBL.
机译:综述了LES在大气边界层湍流模拟中的应用。首先,我们讨论一些历史事实,这些总的观点是有趣的,因为湍流模拟领域的起源是数值天气预报。我们没有对LES技术及其各种细节进行标准的回顾,而是继续着重强调LES在大气边界层中的一些成功,然后是一些失败。成功是对流边界层(CBL)和中性边界层(NBL)的模拟。失败之处是在CBL中都模拟了地表附近的水平速度波动和垂直速度波动的偏斜行为。

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