This article is cited in 4 papers

Mathematical Modelling

Analysis of mathematical model of heat removal from the flat surface by the laminar moving refrigerant through conjugation porous medium

V. I. Rjazhskih^a, D. A. Konovalov^a, M. I. Slyusarev^b, I. G. Drozdov<sup>a

a</sup> Voronezh State Technical University, Voronezh, Russian Federation
^b Military Educational and Scientific Center of the Air Force "N.E. Zhukovsky and Y.A. Gagarin Air Force Academy", Voronezh, Russian Federation

Abstract: A mathematical model of convective heat transfer in a flat porous channel for the laminar flow of Newtonian medium in the form of a boundary value problem for conjugate equations of Darcy–Brinkman–Forchheymer in Darcy–Brinkman approximation and heat transfer in the Schumann's form with the second kind thermal boundary conditions is proposed. An analytical solution of the model equations to calculate the thermal and hydrodynamic fields is obtained by the method of integral transforms. It allowed to find the exact ratios for the hydrodynamic entrance region length, Fanning's hydraulic friction coefficient, identify the local characteristics of the liquid phase and a porous skeleton temperature fields depending on the porosity, as well as to evaluate the local Nusselt numbers and determine the effective heat exchange domain. The data obtained do not contradict the classical results.

Keywords: porous media; heat transfer; flat channel; flow resistance; initial hydrodynamic region.

UDC: 621.1.016.4(03)

MSC: 35K60

Received: 06.04.2016

DOI: 10.14529/mmp160306

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