关键词: 燃料雾化;燃料喷射;涡轮喷气发动机

Abstract: The atomizing performance of an aerated-liquid nozzle is examined with special emphasis on the influence of gas-injector geometry on spray characteristics .A Malvern spray analyzer is used to measure mean drop sizes and drop-size distributions.All measurements are carried out when spraying water into air at normal atmospheric pressure and temperature. Two configurations were selected to provide a wide variation in gas-injector geometry.The results show that atomization quality depends mainly on injection pressure and gas/liquid ratio, and is less sensitive, to gas-injector geometry and injector-orifice diameter. This could prove very advantageous in applications where the liquid to be atomized contains solid particles or contaminants that would tend to block the small holes and passages of conventional nozzle.

Key words: Fuel pulverization;Fuel spray;Turbojet engine