Blast furnace gas is the byproduct of smelting steel production process, and is the important secondary energy source. It is can be used as fuel for engines to generate electricity for most middle and small steel enterprises. In order to understand the combustion mechanism and provide the basis for the design of blast furnace gas engine,premixed laminar combustion experiments of the blast furna...

One of the major problems in turbulent combustion is to predict the turbulent burning velocity, which can be increased by the turbulence compared to the laminar burning velocity. This requires the solution to a reacting ow problem, where the turbulence is coupled to the chemical reaction. The diculties lie in the fact that many disparate spatial and temporal scales are present in the convection...

We consider a passive scalar that is advected by a prescribed mean zero divergence-free velocity field, diffuses, and reacts according to a KPP-type nonlinear reaction. We introduce a quantity, the bulk burning rate, that makes both mathematical and physical sense in general situations and extends the often ill-defined notion of front speed. We establish rigorous lower bounds for the bulk burni...

We consider a passive scalar that is advected by a prescribed mean zero divergence-free velocity eld, diiuses, and reacts according to a KPP-type nonlinear reaction. We introduce a quantity, the bulk burning rate, that makes both mathematical and physical sense in general situations and extends the often ill-deened notion of front speed. We establish rigorous lower bounds for the bulk burning r...

in recent years several studies have been done in the field of laminar flame speed. one of the important characteristics of the combustion is the laminar flame speed. in this study, the effects of co2 and n2 on the laminar flame speed of natural gas and gasoline fuel mixture have been investigated. schlieren method has been used in this study. experiments were carried out at pressure of 1 bar a...

In this investigation, the structure of one-dimensional flame propagation in uniform cloud of volatile organic particles has been analyzed in which the structure of flame is divided into three zones. The first zone is preheat zone which is divided into three subzones itself. In first subzone (heating), particle cloud heated until the moisty particles reach to vapor vaporization temperature. In ...

A new analytical study performed to investigate the effect of the temperature difference between gas and particle in propagation of the spherical flames. The combustible system is containing uniformly distributed volatile fuel particles in an oxidizing gas (Air) mixture. The model includes evaporation of volatile matter of dust particles to known gaseous fuel (methane) and the single-stage reac...

This study discusses the design of a new experimental platform, the Hybrid Flame Analyzer (HFA) to measure burning velocity of gas, dust, and hybrid (gas and dust) premixed flames. The HFA is used to analyze a particle–gas–air system of coal dust particles (75–90 lm and 106–120 lm) in a premixed CH4–air (/g = 0.8, 1.0 and 1.2) flame. Experimental results show that particles usually increase the...