Two transitions of thermosolutal natural convection in the presence of an external magnetic field
Year: 2017
Type: article
Abstract: This paper presents a numerical study of two transitions (onset/oscillatory) of thermosolutal natural convection (TSNC) under the effect of an external magnetic field (MF) in binary mixture.For this, a square enclosure filled with a binary mixture has been considered and exposed to opposing solute and thermal gradients.An external and uniform MF is applied separately in two directions, i.e., vertical and horizontal.The results are given for varying buoyancy ratio (N = 0.75, 1.0 and 1.25), Prandtl number (Pr = 0.71) and Schmidt number (Sc = 3.5).The obtained results show a good agreement with the experimental data available in the literature.We show a strong effect of the buoyancy ratio on the flow field, the thermal and solute structure.The onset of TSNC and oscillatory TSNC flow are determined, and then the oscillatory flow occurs for a periodic time evolution where the phenomena change around in each period time.
DOI: 10.18280/mmep.040302
Institutions: Amar Telidji University of Laghouat, University of Ha'il
Language: English
Subfield: Computational Mechanics
Field: Engineering
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2802709427