Forced Heat Transfer Convection in a Porous Channel with an Oriented Confined Jet

The present study is an analysis of the forced convection heat transfer in porous channel with an oriented jet at the inlet with uniform velocity and temperature distributions. The upper wall is insulated when the bottom one is kept at constant temperature higher than that of the fluid at the entrance. The dynamic field is analysed by the Brinkman-Forchheimer extended Darcy model and the thermal field is traduced by the energy one equation model. The numerical solution of the governing equations is obtained by using the finite volume method. The results mainly concern the effect of Reynolds number, jet angle and thermal conductivity ratio on the flow structure and local and average Nusselt numbers evolutions.





References:
[1] S. Al-Sanea, "A numerical study of the flow and heat transfer characteristics of an impinging laminar slot-jet including crossflow effects ,” Int. J. Heat Mass Transfer., vol. 35, pp. 2501–2513, 1992.
[2] D. Sahoo, M. A. R. Sharif, "Mixed convection cooling of an isothermal hot surface by confined slot jet impingement,” Num. Heat Transfer., vol. 45, pp. 887–909, 2004.
[3] D. Sahoo, M. A. R. Sharif, "Numerical modeling of slot-jet impingement cooling of a constant heat flux surface confined by a parallel wall,” Int. J. Thermal Sciences., vol. 43, pp. 877–887, 2004.
[4] I. Dagtekin, H. F. Oztop, " Heat transfer due to double laminar slot jets impingement onto an isothermal wall within one side closed long duct,” Int. J. Heat Mass Transfer., vol. 35, pp. 65–75, 2008.
[5] A. Sivasamy, V. Selladurai, P. R. Kanna "Mixed convection on jet impingement cooling of a constant heat flux horizontal porous layer,” Int. J . Thermal Sciences., vol. 49, pp. 1238–1246, 2010.
[6] M. Rahimi-Esho, A. A. Ranjbar, A. Ramiar, M. Rahgoshay "Numerical simulation of forced convection of nanofluid in a confined jet,” Heat Mass Transfer., vol. 48, pp. 1995–2005, 2012.
[7] F. Afroz, M. A. R Sharif, "Numerical study of heat transfer from an isothermally heated flat surface due to turbulent twin oblique confined slot-jet impingement ,” Int. J . Thermal Sciences., vol. 74, pp. 1–13, 2013.
[8] Y. Shi, M. B. Ray, A. S. Mujumdar "Numerical study on the effect of cross-flow on turbulent flow and heat transfer characteristics under normal and oblique semi-confined impinging slot jets,” Drying Technology., vol. 21, No. 10, pp. 1923–1939, 2003.
[9] A. Sivasamy, V. Selladurai, P. Rajesh Kanna "Jet impingement cooling of a constant heat flux horizontal surface in a confined porous medium: Mixed convection regime,” Int. J. Heat Mass Transfer., vol. 54, pp. 5847–5847, 2010.
[10] A. Marafie, K. Khanafer, B. Al-Azmi, K. Vafai, " Non-Darcian effects on the mixed convection heat transfer in a metallic porous block with a confined slot jet ,” Num. Heat Transfer., vol. 54, pp. 665–685, 2008.
[11] S. V. Patankar, Numerical Heat Transfer and Fluid Flow, Hemisphere, New York, 1980.
[12] H. L. Stone," Iterative solution of implicit approximations of multidimensional partial differential equations,” SIAM. J. Num. Anal., vol. 5. No. 3, September, 1968.