The atomization and mixing processes of fuel in crossflows are among the important aspects of research into Rocket-Based Combined-Cycle (RBCC) engine technology. In this paper, the atomization characteristics and penetration height of the kerosene jet in crossflows are studied. The influences of the orifice diameter, number, and arrangement, the injection pressure drop of fuel, the orifice diameter and the Mach number of the crossflow are analyzed applying different optical measuring methods. The results reveal that the injection pressure drop of fuel and the crossflow Mach number are both positively correlated with the atomization performance, whereas the orifice diameter is negatively correlated with the atomization performance. By analyzing the penetration height under different operating conditions, it can be seen that when the other factors are kept constant, the penetration height increases with increasing orifice diameter and pressure drop. Using a leastsquares, an empirical formula for the jet penetration height in terms of momentum flux ratio and axial distance was obtained.

中文翻译：

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错流煤油射流的雾化特性

横流燃料的雾化和混合过程是基于火箭的联合循环（RBCC）发动机技术研究的重要方面。本文研究了煤油射流在横流中的雾化特性和穿透高度。使用不同的光学测量方法，分析了孔口直径，数量和布置，燃料的喷射压降，孔口直径和马赫数的影响。结果表明，燃料的喷射压降和错流马赫数均与雾化性能呈正相关，而孔口直径与雾化性能呈负相关。通过分析不同操作条件下的穿透高度，可以看出，当其他因素保持恒定时，渗透高度随孔口直径和压降的增加而增加。使用最小二乘，获得了动量通量比和轴向距离方面的射流穿透高度的经验公式。