Computational analysis of convective instabilities in a liquid layer subjectedto an inclined gradient of temperature

D. Nezar, S. Rahal

University Hadj Lakhdar, Batna, 05000, Algeria

Abstract: A 3D numerical study of convective instabilities in a horizontal liquid layer (silicone oil with a Prandtl number $\mathrm{Pr}=102$) with an upper free surface is presented. The liquid layer is subjected to an inclined gradient of temperature. The influence of both gravity and thermocapillary forces on the formation of convective patterns is studied for different values of the liquid layer depth. Numerical results are found to be in good agreement with experimental data of other authors.

Keywords: Benard–Marangoni convective instability, gravity force, thermocapillary force, patterns, CFD.

UDC: 532.5

Received: 09.01.2014
Revised: 03.06.2015

DOI: 10.15372/PMTF20160309

 English version: Journal of Applied Mechanics and Technical Physics, 2016, 57:3, 457–462

Bibliographic databases:

•