Resolution Sensitivity and Scaling of Large-Eddy Simulations of the Stable Boundary Layer

被引：0
|
作者：
Robert J. Beare
Malcolm K. Macvean
机构：
[1] Met Office,
来源：
Boundary-Layer Meteorology | 2004年 / 112卷
关键词：
First-order and second-order scalings; Large-eddy simulation; Resolution; Stable boundary layer;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Large-eddy simulations (LES) of the continuously turbulent quasi-equilibrium stable boundary layer (SBL) are conducted with grid lengths in the range of 12.5 m to 2 m, in order to explore resolution sensitivity, and determine at what point grid convergence occurs. The structure of the mean potential temperature, winds, and turbulent fluxes varies significantly over this resolution range. The highest resolution simulations show a significant degree of convergence. The dimensionless momentum diffusivity asymptotes to a value of 0.06, corresponding to a limiting flux Richardson number of 0.15.
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页码：257 / 281
页数：24
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