Numerical simulation of porous media combustion for high temperature heat exchanger

Numerical Simulation of Combustion in Porous Media

Transient Numerical Simulation of Combustion in Inert Porous Media

This paper presents methods for the time-dependent numerical solution of a two-dimensional model governing combustion in inert porous media. The spatial discretization is based on a mixed nite element method for the ow problem and a cell-centered nite volume scheme for the transport equations. Some results of numerical simulations show the innuence of a jump in the porosity of the solid matrix ...

Numerical simulation of a three-layered radiant porous heat exchanger including lattice Boltzmann simulation of fluid flow

This paper deals with the hydrodynamic and thermal analysis of a new type of porous heat exchanger (PHE). This system operates based on energy conversion between gas enthalpy and thermal radiation. The proposed PHE has one high temperature (HT) and two heat recovery (HR1 and HR2) sections. In HT section, the enthalpy of flowing high temperature gas flow that is converted to thermal radiation em...

Numerical Simulation of Combustion with Porous Medium in I.C. Engine

Porous media has interesting features in compared with free flame combustion due to the extended of the lean flammability limits and lower emissions. Advanced new generation of internal combustion (IC) engines are expected to have far better emissions levels both gaseous and particulate matter, at the same time having far lower fuel consumption on a wide range of operating condition. These c...

A Semi-Empirical Model for Porous Media Heat Exchanger Design

1 Fellow, ASME Abstract A semi-empirical model for conduction/convection in a thin “fin-like” porous wall of arbitrary composition and thickness is developed. The model assumes one-dimensional conduction in the porous matrix and one-dimensional flow of the coolant through the wall. Closed form solutions are obtained for a uniform composition and thickness porous wall having an insulated tip. An...