RT Journal Article
ID 008f8b927696b967
A1 Rabhi, Raja 
A1 Amami, Bayssain
A1 Dhahri, Hacen
A1 Mhimid, Abdallah
T1 HEAT TRANSFER AND ENTROPY GENERATION IN POROUS MICRODUCT WITH SLIP BOUNDARY CONDITION USING LATTICE BOLTZMANN METHOD UNDER NONEQUILIBRIUM CONDITIONS
JF Journal of Porous Media
JO JPM
YR 2017
FD 2017-04-03
VO 20
IS 3
SP 227
OP 247
K1 microduct
K1 porous media
K1 LTNE
K1 DBF
K1 entropy generation
K1 viscous dissipation effects
K1 LBM
AB Solar water heating systems prove to be an effective technology for converting solar energy into thermal energy. The efficiency of solar thermal conversion is important compared to solar electrical direct conversion systems. Therefore this paper improves numerically the thermal efficiency of solar water heaters wherein we try to improve the convective heat transfer. The Darcy-Brinkman-Forchheimer (DBF) model is used to establish momentum equations for porous media, while the local thermal nonequilibrium model is adopted to represent the fluid–solid energy exchange. The solutions for velocity and temperature are obtained considering the viscous dissipation effect. This study details the effects of variations in the Knudsen number, Darcy number, and other dimensionless numbers on the velocity, temperature, Nusselt number, and entropy generation to illustrate important fundamental and practical results. In fact, using porous materials with high permeability, including viscous dissipation, enhances heat transfer.

PB Begell House
LK https://www.dl.begellhouse.com/journals/49dcde6d4c0809db,3bea89ba0d4481ea,008f8b927696b967.html