【摘要】 应用Malvern激光粒子分析仪在气流速度50～150m/s,供油压力1.0786～4.1188MPa,喷嘴孔径0.5～0.9mm,喷嘴下游距离60～250mm参数范围内试验研究了直射式喷嘴垂直跨流喷射的雾化特性沿径向位置、射流穿透深度与最大浓度线的变化,双喷嘴的雾化特性以及稳定器对雾化特性的影响。更多还原

【Abstract】 This paper presents the spatial distribution characteristics of fuel sprays emanating from a plain orifice injector commonly used in the afterburner in high speed transverse air stream. The injectors were tested on kerosine at air velocity ranged from 50 to 150m/s,pressure drop of injector (1. 1 - 4. 2) × 106Pa,orifice diameter of injector,0. 5-0. 9mm,axial distance between the injector and the survey plain,50-250mm. The method utilizes a standard diffraction based sizing system (i. e. Malvern). The Souter Mean Diameter (SMD) changing with radial positions,penetration of fuel spray and maximum fuel concentration line were investigated in detail. It was also found that the flameholder geometry has the influence on SMD.更多还原