An Experimental Numerical And Cfd Investigation Into The Heat Transfer And Flow Characteristics In Porous Media Using A Thermal Non Equilibrium Model
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Experimental Study on Heat Transfer in Porous Media
Author: Dr. Beant Singh
language: en
Publisher: Partridge Publishing
Release Date: 2015-08-06
The book is specially designed for postgraduate candidates and research scholars. We have assumed that the reader is conversant with the basic elements of fluid mechanics and heat transfer, but otherwise the book is self-contained. The book describes temperature variation, heat energy exchange, and fluid movement in porous media with the help of experimentation. The experiment is carried with different spherical balls, and water is used as fluid. The materials used as a porous media have different thermodynamic properties. The amount of heat energy exchange and thermal nonequilibrium is analyzed. The heat energy exchange is compared for different materials.
An Experimental, Numerical, and CFD Investigation Into the Heat Transfer and Flow Characteristics in Porous Media Using a Thermal Non-Equilibrium Model
Heat transfer and fluid flow through porous media was investigated using numerical simulations and experiment. For the numerical simulations, two models were created. The first consisted of a two-dimensional numerical model created in MathCAD and was solved using the finite difference approach. The MathCAD model's flow in the porous media was described by the Brinkman-Forchheimer-extended Darcy equation. The second model consisted of a computational fluid dynamics (CFD) porous media model using Fluent and was solved using the finite volume approach. Both models assumed constant fluid phase and properties. Pore diameters were held constant for each simulation; two different porosities were investigated. Boundary conditions were applied at the wall in which the temperatures of the fluid and the porous media were determined by coupled energy equations. The effects of the boundary condition, the Reynolds number, porosity, and heat input were examined.
Convective Heat Transfer in Porous Media
Focusing on heat transfer in porous media, this book covers recent advances in nano and macro’ scales. Apart from introducing heat flux bifurcation and splitting within porous media, it highlights two-phase flow, nanofluids, wicking, and convection in bi-disperse porous media. New methods in modeling heat and transport in porous media, such as pore-scale analysis and Lattice–Boltzmann methods, are introduced. The book covers related engineering applications, such as enhanced geothermal systems, porous burners, solar systems, transpiration cooling in aerospace, heat transfer enhancement and electronic cooling, drying and soil evaporation, foam heat exchangers, and polymer-electrolyte fuel cells.