RT Journal Article
ID 25eab17321c360ab
A1 Chattopadhyay, Anirban
A1 Pandit, Swapan K.
T1 MIXED CONVECTION AND ENTROPY GENERATION IN A POROUS DEEP CAVITY: EFFECT OF UNIFORM AND NONUNIFORM HEATED WALLS
JF Journal of Porous Media
JO JPM
YR 2016
FD 2016-08-18
VO 19
IS 6
SP 471
OP 495
K1 HOC scheme
K1 unsteady Navier-Stokes equations
K1 Brinkman-extended Darcy model
K1 uniform and nonuniform heating
K1 porous medium
K1 entropy generation
AB Mixed convection flows in a lid-driven rectangular cavity having aspect ratios of 0.5,1.0,2.0, and 4.0 filled with porous medium are studied computationally using our recently proposed higher order compact scheme presented in Pandit et al. (2007) to investigate influence of uniformly and nonuniformly heated bottom and right walls. The top wall is adiabatic, which is allowed to move in its own plane at a constant speed, while the left vertical wall is maintained at constant cold temperature. We have used a stream function (ψ) - vorticity (ς) formulation of two-dimensional unsteady Navier-Stokes equations with the consideration of the Brinkman-extended Darcy model to simulate the momentum transfer in the porous medium. In addition, local entropy generation distributions are determined based on the obtained dimensionless velocity and temperature values. In order to obtain the results in terms of stream functions, isotherm contours, and Nusselt numbers we have varied the pertinent physical parameters, e.g., Reynolds number (Re), Darcy number (Da) and Prandtl number (Pr) over a wide range of 1 ≤ Re ≤ 103, 10-6 ≤ Da ≤ 10-3 and 0.7 ≤ Pr ≤ 10, respectively, with a fixed Grashof number (Gr) = 105.
PB Begell House
LK https://www.dl.begellhouse.com/journals/49dcde6d4c0809db,15fb82b70f2cdbe8,25eab17321c360ab.html