Mixed convection in a channel provided with heated porous blocks of various shapes

Experimental and Numerical Investigation of Combined Convection Heat Transfer and Fluid Flow around Circular Cylinder through Rectangular and Trapezoidal Open-Cell Aluminum Foams

“…Therefore, the results were compared to the findings of studies that focused on flow-through porous media in a horizontal channel. The present results were compared to those obtained by Guerroudj and Kahalerras (2010), who studied mixed convective heat transfer in a parallel plate channel with various porous block shapes, including rectangular (c ¼ 90 ) and triangular (c ¼ 50.1944 ). The blocks were heated from below and attached to the lower plate while the upper plate was thermally insulated.…”

“…The global Nusselt numbers were compared to numerical results reported by Guerroudj and Kahalerras (2010) at Darcy numbers of 10 À2 and 10 À3 . The comparison shows that the present results have a 6% deviation, as shown in Figure 7.…”

“…Given an aspect ratio of a < 1, the local Nusselt number sharply decreased at the point where the metal foam ended. Guerroudj and Kahalerras (2010) numerically studied mixed convective heat transfer in a parallel plate channel with various porous blocks shapes. Blocks were heated from below and attached to the lower plate while the upper plate was thermally insulated.…”

A numerical investigation of heat transfer and entropy generation during jet impingement cooling of protruding heat sources without and with porous medium

“…The use of porous layer for enhancement of heat transfer has received considerable attention over the last several years [15][16][17][18]. Recently, Chen et al [19] has investigated heat transfer enhancement from multiple discrete flush mounted heat sources in a horizontal channel by metal-foam porous layer.…”

Numerical Analysis of Thermal and Aerodynamic Fields in a Channel with Cascaded Baffles

“…The upstream baffle was attached to the top heated surface, while the position, orientation, and the shape of the other baffle were varied to identify the optimum configuration for enhanced heat transfer. Guerroudj and Kahalerras [9] simulated the influence of porous block shape on the laminar mixed convective heat transfer and airflow characteristics inside a two-dimensional parallel plate channel when the buoyant and forced flow effects are simultaneously present. The influence of the buoyancy force intensity, the porous blocks shape going from the rectangular shape to the triangular shape, their height, the porous medium permeability, the Reynolds number and the thermal conductivity ratio was analyzed.…”