An Experimental Study on the Effects of Air Distributions in the High Intensity Combustion Chamber

Abstract

An experiment was made to study the relations of the air distributions to the combustion chamber performances and the combustion processes in a high intensity combustion chamber. The box-type combustion chamber used in the experiment can supply the primary-, the secondary- and the tertiary-air flow separately with desired rate. The combustion efficiencies, the flow patterns, the lean blow-off limits, the pressure losses adn the temperature distributions in the combustion chamber were emasured for various air distributions and liner-swirler combinations, and it was found that these factors depended on each air distribution and liner-swirler combination. According to the main result of the experiment, if the information on the primary combustion zone, for example, the air-fuel ratio in it and the length of the recirculation zone, are obtained, it is possible to explain the combustion chamber performances and the combustion processes in the combustion chamber reasonably.