File Name: porous media heat and mass transfer transport and mechanics .zip
- Transport Phenomena in Heat and Mass Transfer
- Transport Phenomena in Porous Media III
- Heat and Mass Transfer in Porous Media
It reports the latest and most creative research results in the fields of heat and mass transfer including conduction, convection and radiation, phase change phenomena, heat exchanger design and testing, nuclear reactors, geothermal heat recovery, alternative energy systems, Emerging technologies such as Micro-Electro-Mechanical Systems MEMS , Micro-channels, Fuel cell, Bio- and Nano-technology, Transport in Porous media, Ice formation, and Melting , Reactor design, Microreactors, Multiphase reactors, Multiscale modeling, Transport phenomena related to multiphase reactors; Gas-solid reactions, Heat transfer in machinery and welding operations. The Journal welcomes contributions which promote the exchange of ideas and rational discourse between practicing educators and Mechanical or Chemical engineering researchers all over the world. Thus high quality research papers or reviews dealing with any aspect heat and mass transfer are welcomed.
Transport Phenomena in Heat and Mass Transfer
Hartley, J. May 1, Heat Transfer. May ; 2 : — The transient heat and mass transfer in a moist porous medium adjacent to a cylindrical heat source is analyzed in order to characterize the thermal stability of the medium. In the context of this paper, thermal instability occurs in a moist porous medium as a result of significant drying due to excessive thermally induced moisture movement. A dry zone is created which propagates into the medium and thereby inhibits dissipation of heat from the source.
Transport Phenomena in Porous Media III
In this article we use the method of volume averaging to derive the governing equations for heat and mass transport in a rigid porous medium. These equations involve spatial derivations of the temperature and concentration and suitable representations of these deviations are required in order to obtain a closure. In our approach, the closure is based on the governing differential equations for the spatial deviations and it allows for the direct determination of the transport coefficients that appear in the volume-averaged equations. These calculated coefficients are compared with experimental measurements for the following cases: diffusion and reaction in porous media, heat conduction in two-phase systems, dispersion of a non-adsorbing solute and thermal dispersion in a packed bed. For conductive and diffusive transport, excellent agreement between theory and experiment is found using the spatially periodic model of a porous medium. The comparison between theory and experiment for convective processes indicates that the details of the structure of a real porous medium are important and not adequately described by the spatially periodic models used in this study. Unable to display preview.
Heat and Mass Transfer in Porous Media
The present paper is concerned to analyze the influence of the unsteady free convection flow of a viscous incompressible fluid through a porous medium with high porosity bounded by a vertical infinite moving plate in the presence of thermal radiation, heat generation, and chemical reaction. The fluid is considered to be gray, absorbing, and emitting but nonscattering medium, and Rosseland approximation is considered to describe the radiative heat flux in the energy equation. The dimensionless governing equations for this investigation are solved analytically using perturbation technique. The effects of various governing parameters on the velocity, temperature, concentration, skin-friction coefficient, Nusselt number and Sherwood number are shown in figures and tables and analyzed in detail.
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