Conjugate heat transfer inside a porous channel

Analytical and numerical analyses have been performed for fully developed forced convection in a fluid-saturated porous medium channel bounded by two parallel plates. The channel walls are assumed to be finite in thickness. Conduction heat transfer inside the channel wall is also accounted and the full problem is treated as a conjugate heat transfer problem. The flow in the porous material is described by the Darcy–Brinkman momentum equation. The outer surfaces of the solid walls are treated as isothermal. A temperature dependent volumetric heat generation is considered inside the solid wall only. Analytical expressions for velocity, temperature, and Nusselt number are obtained after simplifying and solving the governing differential equations with reasonable approximations. Subsequent results obtained by numerical calculations show an excellent agreement with the analytical results.

[1]  S. Korpela,et al.  On the calculation of the temperature distribution in a packed bed for solar energy applications , 1979 .

[2]  F. White Viscous Fluid Flow , 1974 .

[3]  G. Spiga,et al.  A rigorous solution to a heat transfer two phase model in porous media and packed beds , 1981 .

[4]  Analytical solutions for transient conjugated heat transfer in parallel plate and circular ducts , 1992 .

[5]  I. Pop,et al.  Conjugate free convection from a circular cylinder in a porous medium , 1992 .

[6]  R. M. Cotta,et al.  Heat transfer in laminar flow with wall axial conduction and external convection , 1991 .

[7]  A. Bejan,et al.  Convection in Porous Media , 1992 .

[8]  S. Mahmud,et al.  Free convection in an enclosure with vertical wavy walls , 2002 .

[9]  A. Kuznetsov,et al.  Local thermal nonequilibrium effects in forced convection in a porous medium channel: a conjugate problem , 1999 .

[10]  Sung Jin Kim,et al.  Analysis of Surface Enhancement by a Porous Substrate , 1990 .

[11]  M. Collins,et al.  Combined convection and wall conduction effects in laminar pipe flow: numerical predictions and experimental validation under uniform wall heating , 1995 .

[12]  A. Bejan Convection Heat Transfer , 1984 .

[13]  I. Pop,et al.  Conjugate natural convection in porous media , 1997 .

[14]  R. Shah Laminar Flow Forced convection in ducts , 1978 .

[15]  F. Higuera Conjugate natural convection heat transfer between two porous media separated by a horizontal wall , 1996 .

[16]  Leandro S. Oliveira,et al.  CONJUGATE HEAT AND MASS TRANSFER IN CONVECTIVE DRYING OF POROUS MEDIA , 1998 .

[17]  G. Swift Thermoacoustics: A Unifying Perspective for Some Engines and Refrigerators , 2017 .

[18]  W. Minkowycz,et al.  The effect of prandtl number on conjugate heat transfer in porous media , 1986 .

[19]  C. Tien,et al.  Effects of thermal dispersion on forced convection in fibrous media , 1988 .