Calculation of a combustion problem of a methane-air mixture in a slot burner with a nonreactive inner insert in a two-dimensional approach

Abstract

The authors solved the burning problem of a methane-air mixture in a narrow slot burner with an internal partition wall in a two-dimensional approximation. The solution was made by means of the Ansys Fluent package for equations taking into account the effect of heat expansion, heat and mass transfer and chemical reaction kinetics of the first order. The study was performed in two stages. At the first stage a cold gas steady flow was calculated; at the second stage, problem of ignition and stable combustion mode setting was solved. The paper shows an example of a stable combustion mode setting for the process having started by the heated inner wall. The obtained results were compared with the results of calculations for one-dimensional model. The experimenters showed qualitative consistency between the results of numerical investigation of the problem in the one-dimensional formulation and simulation results using the Ansys Fluent package.