The flame stability limit, which was involving the critical flow condition, lift off and blow out, could be affected by the burner geometry in the combustion system installation. Consequently a flame holder should be put in, to hold the flame as big as possible on a stable condition. The flame holder itself, is a device to hold the flame, whereas the flame holder could disturb the air and fuel ...

The flame retardancy of plywood should be improved as much possible while minimizing the impact on bonding strength plywood. Six commercial retardants and three laboratory synthesized phosphorous nitrogen were selected. E0, E1 E2 grade formaldehyde resins (UF) applied in this study to evaluate effect different curing time resin, strength, retardant performance, emission results show that additi...

Final Report: Experimental Studies of Hydrocarbon Flame Phenomena: Enabling Combustion Control Report Title This report summarizes the research accomplished in the project "Experimental Studies of Hydrocarbon Flame Phenomena: Enabling Combustion Control". The main areas of activity are: a) electrostatic flame and flow control, b) flame hysteresis in heated coflows, c) flame lifting and splittin...

diffusion flame in a dust cloud combustion in a counterflow configuration is investigated in this research. it is presumed that the fuel particles vaporize first to yield a gaseous fuel to oxidize with the gas phase. the reaction rate is assumed to be of the arrhenius type. conservation equations for the non-unity lewis number are solved and the flame temperature with the variations of differen...

This paper deals with the development of flame imaging system using laser-based tomography. The aim of this project is to obtain the concentration profile of the flame to be incorporated in laser-based transmission tomography measurement system for combustion on-line monitoring. The system can be applied in real–time manner to produce a cross sectional images of flame such as that in a combusti...

This research supported by the U.S. Army Research Office examines a myriad of facets of lifted hydrocarbon jet flames in the presence of air co-flow. At a certain jet exit velocity, a flame will lift from the fuel nozzle and stabilize at some downstream position. The partially-premixed flame front of the lifted flame oscillates, with the oscillations becoming greater in flames stabilized furthe...

Understanding the dynamics and the stabilisation of flames is important for practical applications and for theoretical research. Here, to investigate the time-evolution of a Bunsen flame in a Poiseuille flow, we extend a G-equation-based kinematic model by accounting for flame stabilisation. The nonlinear G-equation is solved analytically using the methods of characteristics. The solution is th...