الفهرس 
chapter 1Only 14 pages are availabe for public view
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Abstract
The combustion characteristics of Kerosene diffusion flame with introducing secondary air to the combustion chamber by different quantities and directions were investigated. The flame stability and reverse flow zone boundaries were investigated. The temperature distribution, flame shape and exhaust species concentrations were measured under different operating conditions of air swirl number, air to fuel ratio, secondary air direction and secondary to primary air ratio. The experimental results show that, the flame stability is improved by introducing secondary air in all directions except backward one. Increasing secondary to primary air mass flow ratio, the flame length and the flame temperatures decreased, results in a reduction of NOX and CO concentrations and consequently increasing of CO2 concentration.