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Journal of Porous Media
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ISSN Imprimir: 1091-028X
ISSN En Línea: 1934-0508

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Journal of Porous Media

DOI: 10.1615/JPorMedia.v11.i8.70
pages 791-801

Prandtl Number Effects on Mixed Convection in a Lid-Driven Porous Cavity

Prem Kumar Kandaswamy
UGC-DRS Center for Fluid Dynamics, Department of Mathematics, Bharathiar University, Coimbatore-641046, Tamil Nadu, India; Department of Mechanical Engineering, Yonsei University, Seoul, South Korea
M. Muthtamilselvan
Department of Applied Mathematics, Bharathiar University, Coimbatore-641 402, India
Jinho Lee
School of Mechanical Engineering, Yonsei University, Seoul 120-749, Korea

SINOPSIS

Mixed convection in a lid-driven square cavity filled with a fluid saturated porous medium is studied numerically. The left and right vertical walls of the cavity are insulated, while both the top and bottom horizontal walls are kept at constant but different temperatures. The top horizontal wall is moving in its own plane at a constant speed, while all other walls are fixed. The governing equations are solved numerically by the finite volume method with the Semi Implicit Method for Pressure Linked Equation (SIMPLE) algorithm. Numerical solutions are obtained for a wide range of the Prandtl number. Detailed results are presented in the form of streamlines and isotherms. It is found that for low Prandtl numbers, conduction is dominates; as Prandtl number increases, mixed convection and forced convection dominate the temperature field.


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