Research On Numerical Simulation Of Metal Fiber Burner

Metal fiber burner is classified as a device with porous media combustion technologyinvolved. Compared to traditional free diffusion flame burner, it provides not only lowpollutions, high firing intensity, high tempering security, but also a wider range of firingload, completive combustion, low heat inertia, favorable impact resistance and otheradvantages. In addition, its exhaust heat loss is low, as well as the operation noise, whichmeet the social needs of energy conservation and emissions reduction. Based onbackground of the technical principle of metal fiber burner, commercial software Fluentwas used to study combustion simulation method. A preliminary model was formed, andso as the corresponding simulation results and analysis conclusions.(1) First of all, practical operation principle, characteristics and advantages of metalfiber burner has been described, the modeling difficulty and the basis has beensummarized, single and double layer metal wired model has been put forward. On thegiven physical model, numerical model and the boundary condition constraints was addedto form a complete problem description, which made a preparation for numericalcalculation.(2) The specific conditions of single and double layer metal wired model has beensimulated, the results was gained such as gas flow rule in non-reaction and reaction state,distribution of components concentration, temperature distribution, etc. The results showthat the calculation has completed the expression of the control equations and boundaryconditions set in advance. At the same time, the results revealed the issue that reactionposition is skewed to some extent.(3) Aiming at the problem reflected by the simulation results, theoretical evaluationand analysis was followed. Judging from the flame propagation principle and flamestability mechanism, the simulation results are distorted; By switching operation conditions and its comparative analysis of key mathematical control equation, it isconcluded that the lack of detailed mathematical control equation affected the rationalityof the simulation result.