发帖
雷达卡
摘要翻译：
根据高雷诺数大气实验中获得的涡度时间序列，我们发现在一个很好的近似下，表面边界层流动在一定的统计意义上可以描述为均匀湍流系统的平流系综，其特征是脉动强度的对数正态分布。我们的分析表明，在中等雷诺数下进行的均匀和各向同性湍流的常规直接数值模拟，如果辅以与大尺度涨落结构有关的适当统计信息，可能在湍流边界层流动的研究中发挥重要作用。
---
英文标题：
《Large Scale Intermittency in the Atmospheric Boundary Layer》
---
作者：
M. Kholmyansky, L. Moriconi, and A. Tsinober
---
最新提交年份：
2007
---
分类信息：
一级分类：Physics 物理学
二级分类：Fluid Dynamics 流体动力学
分类描述：Turbulence, instabilities, incompressible/compressible flows, reacting flows. Aero/hydrodynamics, fluid-structure interactions, acoustics. Biological fluid dynamics, micro/nanofluidics, interfacial phenomena. Complex fluids, suspensions and granular flows, porous media flows. Geophysical flows, thermoconvective and stratified flows. Mathematical and computational methods for fluid dynamics, fluid flow models, experimental techniques.
湍流，不稳定性，不可压缩/可压缩流，反应流。气动/流体力学，流体-结构相互作用，声学。生物流体力学，微/纳米流体力学，界面现象。复杂流体，悬浮液和颗粒流，多孔介质流。地球物理流，热对流和层流。流体动力学的数学和计算方法，流体流动模型，实验技术。
--
一级分类：Physics 物理学
二级分类：Statistical Mechanics 统计力学
分类描述：Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变，热力学，场论，非平衡现象，重整化群和标度，可积模型，湍流
--
一级分类：Physics 物理学
二级分类：Atmospheric and Oceanic Physics 大气与海洋物理
分类描述：Atmospheric and oceanic physics and physical chemistry, biogeophysics, and climate science
大气和海洋物理和物理化学，生物地球物理和气候科学
--
---
英文摘要：
We find actual evidence, relying upon vorticity time series taken in a high Reynolds number atmospheric experiment, that to a very good approximation the surface boundary layer flow may be described, in a statistical sense and under certain regimes, as an advected ensemble of homogeneous turbulent systems, characterized by a lognormal distribution of fluctuating intensities. Our analysis suggests that usual direct numerical simulations of homogeneous and isotropic turbulence, performed at moderate Reynolds numbers, may play an important role in the study of turbulent boundary layer flows, if supplemented with appropriate statistical information concerned with the structure of large scale fluctuations.
---
PDF链接：
https://arxiv.org/pdf/705.048
京公网安备 11010802022788号
