The Theory And Simulation For The Combustion Process Of Multiple Ejection/Tangential Circle Premixed Flow/Porous Media Burner

The porous medium combustion (PMC) technology has several advantages, such as highcombustion efficiency, adjustable power range, widening flammability limits, and low pollutantemissions. Based on the theory and experimental research about PMC, this paper proposes a noveltype of multiple ejection/ tangential circle premixed flow/ porous media burner for household gasstove. The numerical method is employed to determine the reasonable premixing chamberparameters and a reasonable first air coefficient, and methane/air combustion process is investigateddetailed by numerical simulating method.Using FLUENT software, the flow field of the premixed flow porous media burner issimulated , the premixing chamber parameters are gained , and the velocities, pressures, turbulencekinetic energy and turbulence kinetic energy dissipation rate are analysed detialed. It is shown that ,the Optimization rotation angle is in 17-18 degree and tilt angle in the 7-7.5 degree by configuringVenturi tubes, methane/ air combustion coefficient is expected to reach > = 1.2.The combustion process of multiple ejection/ tangential circle premixed flow/ porous mediaburner is simulated, and the temperature, mass fraction of component, hot flow velocity, pressureand turbulence kinetic energy and turbulence kinetic energy dissipation rate are analysed again. Thesimulation results provide important theoretical basis for designing a new porous media burners.