Numerical simulation of excess-enthalpy combustion flame propagation of coal mine methane in ceramic foam

doi:10.1016/S1674-5264(09)60192-7

Mining Science and Technology (China)

Volume 20, Issue 2, March 2010, Pages 248-253

https://doi.org/10.1016/S1674-5264(09)60192-7 Get rights and content

Abstract

Based on the assumption of a local non-equilibrium of heat transfer between a solid matrix and gas, a mathematic model of coal mine methane combustion in a porous medium was established, as well the solid-gas boundary conditions. We simulated numerically the flame propagation characteristics. The results show that the flame velocity in ceramic foam is higher than that of free laminar flows; the maximum flame velocity depends on the combined effects of a radiation extinction coefficient and convection heat transfer in ceramic foam and rises with an increase in the chemical equivalent ratio. The radiation extinction coefficient cannot be used alone to determine the heat regeneration effects in the design of ceramic foam burners.

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Numerical simulation of excess-enthalpy combustion flame propagation of coal mine methane in ceramic foam

Abstract

Int Comm Heat Mass Transfer

Int J Heat Mass Transfer

Comprehensive Treatment Technology of Coal Mine Gas

Coal Mine Gas Drainage Theory and Technology

Coal Mine Gas Prevention and Application Technology

Technology of low concentration coal bed methane and its application

Journal of Shandong University of Technology

Burners producing large excess enthalpies

Combustion Science and Technology

An excess enthalpy flame theory

Combustion Science and Technology

Study on the flame quenching and self stabilization in porous medium

Thermal Science and Technology