The preconditioned density-based algorithm and two-domain approach were used to investigate the fluid flow and heat transfer characteristics of confined laminar impinging jet on a plate covered with porous layer.In the porous zone

the momentum equations were formulated by Darcy-Brinkman-Forchheimer model

and the thermal equilibrium model was adopted for energy equation.At the porous/fluid interface

the influence of stress-jump interfacial condition was analyzed.The governing equations were solved by preconditioned density-based infinite-volume method

with preconditioning matrix for equations of porous domain adopted

aiming to eliminate the equation stiffness of porous seepage flow.The effects of Reynolds number

porosity

Darcy number

ratio of thermal conductivities

and porous layer thickness on the flow pattern and local heat transfer were studied.Results indicate that Reynolds number and porosity do not influence the flow pattern of porous channel strongly

while the effects of Darcy number and porous layer thickness are significant.All the parameters mentioned above have obvious influence on local overall heat transfer performance.