Effect of radiative losses on the heat transfer from porous fins

Predicting multiple combination of parameters for designing a porous fin subjected to a given temperature requirement

“…Apart from physical properties, the velocity of the fluid passing through the porous fin depends on the local temperature of the fin, T. In addition to this, the consideration of mass flow rate is also important in porous fins. The following are some salient assumptions for the present problem [6][7][8], (vii) The fluid and solid domains have been assumed to be in local thermal equilibrium. (viii) Performing an energy balance between any two locations along the fin length, at steady-state, the governing energy equation may be expressed as below [6][7][8], where K is the permeability in m 2 and m is the kinematic viscosity of the fluid whose unit is m 2 /s.…”

“…It appears that a good number of studies are available which deal with the analysis of porous fin, among which, most are computational. The governing equation for a typical porous fin primarily involves Darcy model and energy balance equation [6,7]. Additionally, studies have been also done by considering additional features such as inclusion of the surface heat transfer coefficient and the radiative effects [8].…”

“…Depending upon the problem and boundary conditions, many numerical techniques may be applied to obtain the desired objectives. These include the finite element method [2], Runge-Kutta method [6], the finite difference method (FDM) [7], Adomian decomposition method [8], etc. Such approach of obtaining the desired result (for example, temperature) from known data (for example thermo-physical properties, boundary conditions, etc.)…”

Thermal performance of porous fins with temperature-dependent heat generation via the homotopy perturbation method and collocation method

“…The fin is porous to allow the flow of infiltrating through it. Extensive research has been done in this area and many references are available, especially for heat transfer in porous fins [1][2][3][4][5]. Described below are a few papers relevant to the study described herein.…”

Investigations of fin geometry on heat exchanger performance by simulation and optimization methods for diesel exhaust application

“…Though production cost is often the primary limitation, several other selection aspects such as temperature ranges, pressure limits, thermal performance, pressure drop, fluid flow capacity, clean-ability, maintenance and materials, are important issues. One of the most effective methods to increase heat transfer is using the extended surfaces or fins which are widely used by the researchers [5][6][7][8][9]. Some of the special HEX designs to recover the exhaust heat are introduced in the following.…”