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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/11982
Title: Numerical analysis of interaction between inertial and thermosolutal buoyancy forces on convective heat transfer in a lid-driven cavity
Authors: Senthil Kumar D.
Murugesan, Krishnan
Gupta, Akhilesh Kumar
Published in: Journal of Heat Transfer
Abstract: In this paper, results on double diffusive mixed convection in a lid-driven cavity are discussed in detail with a focus on the effect of interaction between fluid inertial force and thermosolutal buoyancy forces on convective heat and mass transfer. The governing equations for the mathematical model of the problem consist of vorticity transport equation, velocity Poisson equations, energy equation and solutal concentration equation. Numerical solution for the field variables are obtained by solving the governing equations using Galerkin's weighted residual finite element method. The interaction effects on convective heat and mass transfer are analyzed by simultaneously varying the characteristic parameters, 0.1<Ri<5, 100<Re<1000, and buoyancy ratio (N), -10<N<10. In the presence of strong thermosolutal buoyancy forces, the increase in fluid inertial force does not make significant change in convective heat and mass transfer when the thermal buoyancy force is smaller than the fluid inertial force. The fluid inertial force enhances the heat and mass transfer only when the thermal buoyancy force is either of the same magnitude or greater than that of the fluid inertial force. The presence of aiding solutal buoyancy force enhances convective heat transfer only when Ri becomes greater than unity but at higher buoyancy ratios, the rate of increase in heat transfer decreases for Re=400 and increases for Re=800. No significant change in heat transfer is observed due to aiding solutal buoyancy force for Ri1 irrespective of the Reynolds number. © 2010 American Society of Mechanical Engineers.
Citation: Journal of Heat Transfer (2010), 132(11): -
URI: https://doi.org/10.1115/1.4002029
http://repository.iitr.ac.in/handle/123456789/11982
Issue Date: 2010
Keywords: lid-driven cavity
mixed convection
thermosolutal buoyancy forces
velocity-vorticity equations
ISSN: 221481
Author Scopus IDs: 57201188591
55065467100
55491955100
Author Affiliations: Senthil Kumar, D., Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee 247 667, India
Murugesan, K., Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee 247 667, India
Gupta, A., Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee 247 667, India
Corresponding Author: Murugesan, K.; Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee 247 667, India; email: krimufme@iitr.ernet.in
Appears in Collections:Journal Publications [ME]

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