Effect of Rayleigh Number and Density Stability Ratio on characteristics of Double-Diffusive Salt Fingers

27th IUPAP Conference on Computational Physics

物理学;计算机科学

Dhiman, Manoj^1 ; Rehman, Faria^1 ; Singh, O.P.^1

School of Engineering, Indian Institute of Technology Mandi, India^1

关键词: Conservation equations;    Double diffusive;    Evolution patterns;    Individual components;    Layer formation;    Stability ratio;    Threedimensional (3-d);    Two layer model;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/759/1/012084/pdf
DOI  :  10.1088/1742-6596/759/1/012084

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

In this paper, we investigate the finger evolution pattern and physics behind the layer formation in a two layer model using numerical simulations. A three-dimensional (3D) numerical code has been developed to solve Navier-Stokes equations along with energy and concentration conservation equations. Simulations were carried out to study the effect of Rayleigh number and density ratio on the characters of salt finger. Instabilities in form of rolls grow from side walls in all simulated cases. Square planform is found to be stable only at low RaT. Individual components flux is found to be larger in 3D case compared to 2D, but the flux ratio is found to be less in 3D.