Numerical Modeling and Investigation of Candle Flame under Different Ambient pressures  Fulltext 

[ Bahman Abbasi ] - MS student in Mechnical Engineering L.N.T University of Technoloy , Tehran, Iran
[ Reza Ebrahimi ] - Assistant professor , Aerospace Engineering Department , K.N.T University of Technology, Tehran, Iran
[ Shafagh Tavasoli ] - BS student in Mechanical Engineering Iran University of Science and Technology , Tehran, Iran

خلاصه مقاله:

Laminar candle flame is modeled and studied by numerical methods. A candle with a specific geometry is placed in an enclosure and is subjected to atmospheric conditions. As the candle is ignited a diffusion flame forms, grows and affects the ambient temperature , pressure and causes natural convection at the proximity of the flame. Equations and methods to evaluate material properties accurately in case of sever dependence of results on material properties are developed and reported. Equations governing the problem are introduced and adapted for the present case. Effect of different ambient pressures on the flame characteristic and soot is examined and discussed. Qualitative comparison of results shows good agreement with theory and experiment. Results are employed to explain and reason the effects of various parameters on the flame and to get a deep insight into fundamentals of laminar diffusion flames.

Candle , n-eicosane , combustion , laminar diffusion plane , soot