Evaluating Subgrid-Scale Models for Large-Eddy Simulation of Turbulent Katabatic Flow

Evaluating Subgrid-Scale Models for Large-Eddy Simulation of Turbulent Katabatic Flow
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评估湍流下降流大涡模拟的亚网格尺度模型

DOI:
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发表时间:
2011
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通讯作者:
A. Shapiro
A. Shapiro
中科院分区:
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文献类型:
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作者:
Bryan A. Burkholder;E. Fedorovich;A. Shapiro

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常用的次网格尺度 (SGS) 模型的性能针对湍流下降流的大涡模拟 (LES) 进行了评估。该流中非常稳定的分层和强大的低水平剪切为 SGS 模型提供了严格的测试。使用后验测试程序,研究了 SGS 模型在再现下降流中的湍流统计数据和频谱方面的性能。
The performance of commonly used subgrid-scale (SGS) models is evaluated for large-eddy simulation (LES) of turbulent katabatic flow. The very stable stratification and strong low-level shear in this flow provide a stringent test for SGS models. Using an a posteriori testing procedure, the SGS models’ performance in reproducing turbulence statistics and spectra in katabatic flow is investigated.