Title of article :
Flame structure and laminar burning speeds of JP-8/air premixed mixtures at high temperatures and pressures
Author/Authors :
Far، نويسنده , , Kian Eisazadeh and Parsinejad، نويسنده , , Farzan and Metghalchi، نويسنده , , Hameed، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2010
Pages :
9
From page :
1041
To page :
1049
Abstract :
Jet propellant 8 (JP-8)/air laminar burning speed was experimentally measured and its flame structure was studied at high temperatures and pressures using a high-speed camera. The experimental facilities included a spherical vessel, used for the measurement of burning speed, and a cylindrical vessel, used in a shadowgraph system to study flame shape and structure and to measure burning speed. A thermodynamic model was developed to calculate burning speeds using the dynamic pressure rise in the vessel due to the combustion process. The model consists of a central burned gas core of variable temperature surrounded first by a reaction sheet, then by an unburned gas shell with uniform temperature and lastly by thermal boundary layers at the wall and electrodes. Radiation from burned gases to the walls was also included in the model. Burning speeds of laminar flames of JP-8/air were calculated for a wide range of conditions. A Power law correlation was developed to calculate laminar burning speed at temperatures ranging from 500–700 K, pressures of 1–6 atm and equivalence ratios of 0.8–1. Flame structure and cell formations were observed using an optical system. Experimental results showed that pressure and the fuel–air equivalence ratio have a strong influence on flame structure.
Keywords :
JP-8 , Laminar burning speed , Flame structure , Aviation fuels
Journal title :
Fuel
Serial Year :
2010
Journal title :
Fuel
Record number :
1465561
Link To Document :
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