Temperature Condition Impact on The Onset of Rayleigh-Benard Convection in a Binary Fluid Saturated Anisotropic Porous Layer

• Published in: Journal of Advanced Research in Experimental Fluid Mechanics and Heat Transfer
• Main Author: Abidin N.H.Z.; Sirat N.F.M.; Bahri S.S.S.; Azeman S.N.A.; Yusof Y.
• Format: Article
• Language: English
• Published: Penerbit Akademia Baru 2024
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85210073306&doi=10.37934%2farefmht.17.1.3546&partnerID=40&md5=127c8b5194d0d800ea13dba91794b0f0

Rayleigh-Benard convection in a saturated anisotropic porous media is investigated numerically. The temperature-dependent viscosity effect was applied to the double-diffusive binary fluid, and the Galerkin method was used to determine the critical Rayleigh numbers for the free-free, rigid-free, and rigid-rigid representing the lower-upper boundaries. The lower and upper boundary was set to be either conducting or insulating to temperature. The purpose of this study is to study the stability of Rayleigh-Benard convection with different temperature conditions in a binary fluid saturated by an anisotropic porous layer. The obtained eigenvalue is numerically solved with respect to various temperatures and velocities using the single-term Galerkin technique. The results, presented graphically, indicate that the rigid-rigid boundaries are more stabilize compared to rigid-free and free-free boundaries. It is also shown that an increase of temperature-dependent viscosity tends to destabilize the onset of double-diffusive convection. © 2024, Penerbit Akademia Baru. All rights reserved.