Abstract

This work studies a stochastic method for the generation of artificial three-dimensional, divergence-free, homogeneous, and isotropic velocity fields. The technique is based on the randomized spectral method. The statistical and spectral properties of turbulent fields constructed by this generator are analyzed. A validation LES-based computation which uses the obtained turbulent fields as initial conditions, demonstrates good agreement of the results with the experimental data.

中文翻译：

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利用随机谱方法生成三维均质各向同性湍流速度场

摘要

这项工作研究了一种随机方法，用于生成人造三维，无散度，均匀和各向同性的速度场。该技术基于随机频谱方法。分析了由该发生器生成的湍流场的统计和光谱特性。使用获得的湍流场作为初始条件的基于LES的验证计算证明了结果与实验数据吻合良好。