Some fundamental issues in buoyancy-driven flows with implications for geophysical and astrophysical systems  

有关浮力驱动流动的几个基本问题及其对地球物理和天体物理系统的影响

作　　者：Ke-Qing Xia Kai Leong Chong Guang-Yu Ding Lu Zhang 夏克青;庄启亮;丁广裕;张路

机构地区：[1]Center for Complex Flows and Soft Matter Research,Southern University of Science and Technology,Shenzhen 518055,China [2]Department of Mechanics and Aerospace Engineering,Southern University of Science and Technology,Shenzhen 518055,China [3]Shanghai Key Laboratory of Mechanics in Energy Engineering,Shanghai Institute of Applied Mathematics and Mechanics,School of Mechanics and Engineering Science,Shanghai University,Shanghai 200072,China

出　　处：《Acta Mechanica Sinica》2025年第1期1-21,共21页力学学报(英文版)

基　　金：supponted by the National Natural Science Foundation of China (Grant Nos 12202173,12072144,12232010,12372219,and 12302282).

摘　　要：Buoyancy-driven flows are prevalent in a wide range of geophysical and astrophysical systems. In this review, we focus on threepivotal effects that significantly influence the dynamics and transport properties of buoyancy-driven flows and may have impli-cations for natural systems. These effects pertain to the role of boundary conditions, the impact of rotation, and the effect offinite size. Boundary conditions represent how the fluid flow interacts with different kinds of surfaces. Rotation, as the Earth’srotation in geophysical systems or the whirling of astrophysical systems, introduces Coriolis and centrifugal forces, leading tothe profound vortical structure and distinct transport property. Finite size, representing geometrical constraints, influences thebehavior of buoyancy-driven flows across varying geometrical settings. This review aims to provide a holistic understanding ofthe intricate interplay of these factors, offering insights into the complex natural phenomena from the perspectives of the threeeffects.由浮力驱动的流动现象广泛存在于地球以及天体物理系统中.本文重点关注了影响浮力驱动流动的动力学特性和输运特性的三个关键因素,以及它们对自然界中的流动所产生的影响.这些因素包括边界条件、旋转以及有限尺寸.其中,边界条件表征了流体如何与不同类型的表面相互作用;旋转,例如地球和其他天体的自转,则会引入科里奥利力和离心力,从而生成涡旋湍流结构以及引起输运特性的变化;有限尺寸则表征了几何约束,不同程度的几何约束也会对湍流结构及其输运规律产生深远影响.本综述文章旨在介绍这些因素之间错综复杂的相互作用,以期从这三个角度出发为更好地理解自然界中相关的复杂流动现象提供新思路.

关 键 词：Buoyancy-driven flows Geophysical turbulence Rayleigh-B´enard convection 

分 类 号：O35[理学—流体力学]