Department of Modern Mechanics, University of Science and Technology of China, Hefei 230026, People's Republic of China.
Physics of Fluids Group, Max Planck Center Twente for Complex Fluid Dynamics, J. M. Burgers Center for Fluid Dynamics and MESA+ Research Institute, University of Twente, 7500 AE Enschede, The Netherlands.
Proc Natl Acad Sci U S A. 2022 May 31;119(22):e2119369119. doi: 10.1073/pnas.2119369119. Epub 2022 May 24.
SignificanceThe presented model describes the vertical structure of conventionally neutral atmospheric boundary layers. Due to the complicated interplay between buoyancy, shear, and Coriolis effects, analytical descriptions have been limited to the mean wind speed. We introduce an analytical approach based on the Ekman equations and the basis function of the universal potential temperature flux profile that allows one to describe the wind and turbulent shear stress profiles and hence capture features like the wind veer profile. The analytical profiles are validated against high-fidelity large-eddy simulations and atmospheric measurements. Our findings contribute to the scientific community's fundamental understanding of atmospheric turbulence with direct relevance for weather forecasting, climate modeling, and wind energy applications.
所提出的模型描述了传统中性大气边界层的垂直结构。由于浮力、剪切和科里奥利效应之间的复杂相互作用，分析描述仅限于平均风速。我们引入了一种基于埃克曼方程和通用位温通量廓线基函数的分析方法，该方法允许描述风速和湍流切应力廓线，从而捕捉到风转向廓线等特征。分析廓线经过高保真度大涡模拟和大气测量的验证。我们的研究结果有助于科学界对大气湍流的基本理解，对天气预报、气候建模和风力发电应用具有直接的相关性。
