The thermal modeling of a matrix heat exchanger using a porous medium and the thermal non-equilibrium model

Heat transfer and fluid flow characteristics through a porous medium were investigated using numerical simulations and experiment. For the numerical simulations two models were created: a two-dimensional numerical model and a Fluent™ computational fluid dynamics (CFD) porous media model. The experimental investigation consisted of a flow channel with a porous medium section that was heated from below by a heat source. The results of the numerical models were compared to the experimental data in order to determine the accuracy of the models. The numerical model was then modified to better simulate a matrix heat exchanger. This numerical model then generated temperature profiles that were used to calculate the heat transfer coefficient of the matrix heat exchanger and develop a correlation between the Nusselt number and the Reynolds number.

[1]  Marc Broussely,et al.  Experimental heat transfer on the windward surface of a perforated flat plate , 2005 .

[2]  Hui Zhang,et al.  Volumetric heat transfer coefficients in solid–fluid porous media: closure problem, thermal analysis and model improvement with fluid flow , 2000 .

[3]  K.G.T. Hollands,et al.  Heat-exchange relations for unglazed transpired solar collectors with circular holes on a square or triangular pitch , 2001 .

[4]  Sung Jin Kim,et al.  On the limitations of the Brinkman-Forchheimer-extended Darcy equation , 1995 .

[5]  Dimos Poulikakos,et al.  Metal foams as compact high performance heat exchangers , 2003 .

[6]  Ioan Pop,et al.  Numerical simulation of natural convection heat transfer in a porous cavity heated from below using a non-darcian and thermal non-equilibrium model , 2006 .

[7]  G. Venkatarathnam,et al.  Transient response of perforated plate matrix heat exchangers , 1998 .

[8]  Ephraim M Sparrow,et al.  Heat transfer coefficients for the upstream face of a perforated plate positioned normal to an oncoming flow , 1982 .

[9]  Frank P. Incropera,et al.  Fundamentals of Heat and Mass Transfer , 1981 .

[10]  T. Jeng,et al.  An analytical study of local thermal equilibrium in porous heat sinks using fin theory , 2006 .

[11]  Hyung Hee Cho,et al.  Experimental Mass (Heat) Transfer in and Near A Circular Hole in a Flat Plate , 1997 .

[12]  Kambiz Vafai,et al.  Constant wall heat flux boundary conditions in porous media under local thermal non-equilibrium conditions , 2002 .

[13]  U. Imke.  Porous media simplified simulation of single- and two-phase flow heat transfer in micro-channel heat exchangers , 2004 .

[14]  G. Venkatarathnam.  Effectiveness-Ntu relationship in perforated plate matrix heat exchangers , 1996 .

[15]  Gadhiraju Venkatarathnam,et al.  Matrix heat exchangers and their application in cryogenic systems , 1990 .

[16]  Pei-Xue Jiang,et al.  Thermal hydraulic performance of small scale micro-channel and porous-media heat-exchangers , 2001 .

[17]  S. Tassou,et al.  Thermal analysis on metal-foam filled heat exchangers. Part I: Metal-foam filled pipes , 2006 .

[18]  S. Whitaker.  The method of volume averaging , 1998 .

[19]  Pei-Xue Jiang,et al.  Numerical investigation of forced convection heat transfer in porous media using a thermal non-equilibrium model , 2001 .

[20]  V. Keilin,et al.  Compact high efficiency perforated-plate heat exchangers , 1976 .

[21]  Murli M. Gupta,et al.  A new paradigm for solving Navier-Stokes equations: streamfunction-velocity formulation , 2005 .

[22]  Abdulmajeed A. Mohamad,et al.  An experimental and numerical study on heat transfer enhancement for gas heat exchangers fitted with porous media , 2004 .