Double diffusive convection in the finger regime for different Prandtl and Schmidt numbers

作     者：Yantao Yang Yantao Yang

作者机构：SKLTCS and Department of Mechanics and Engineering ScienceBIC-ESATCollege of Engineeringand Institute of Ocean ResearchPeking UniversityBeijing 100871China 

出 版 物：《Acta Mechanica Sinica》 (力学学报（英文版）)

年 卷 期：2020年第36卷第4期

页      面：797-804页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

基　　金：supported by the Major Research Plan of National Natural and Science Foundation of China for Turbulent Structures(Grants 91852107 and 91752202) 

主　　题：Double diffusive convection Convection turbulence Hirbulent mixing 

摘      要：In this work fingering double diffusive convection,*** buoyancy-driven flow with fluid density being affected by two different scalar components,is investigated numerically with special efforts on the influences of the physical properties of two scalar *** show that different scalar properties can affect the global transport *** concentration flux exhibits different exponents in their power-law scalings for different combinations of scalar *** scaling exponents of heat flux,however,depend mainly on the ratio of the diffusivities of two *** one uses the local parameters of the finger layer in the bulk,the behaviors are very similar to those found in the fully periodic *** horizontal width of the fingers is consistent with the wavelength of the fast growing *** one case we observe evidences of the thermohaline staircase,namely,the typical width of the flow structures changes significantly in different layers within the flow domain.