直射式喷嘴结构简单，在航空发动机中得到了广泛的应用，国内外学者也对其进

The direct-injection nozzle has a simple structure and has been widely used in aero engines. Scholars at home and abroad have also conducted a lot of research on it. However, there are few studies on the influence of the direct-injection nozzle structure parameters on the oil mist characteristics, especially the stability of bluff bodies. Research on the oil mist field of the direct injection nozzle behind the device. The research content of this paper includes: research on the current situation of fuel atomization measurement method, numerical simulation and experimental research at home and abroad, and numerical simulation and experimental research on the concentration distribution characteristics of different nozzle structure parameters, aerodynamic parameters and fuel supply pressure difference. The law of change has been improved.

Direct-fire nozzle structure is simple, has been widely used in aviation engines, domestic and foreign scholars have also conducted a lot of research on it, but the direct-fire nozzle structure parameters on the characteristics of oil mist less research, especially the blunt-injection nozzle oil mist field after blunt stabilizer research. The contents of this paper include: the current situation of fuel atomization measurement method, numerical simulation and test research at home and abroad, and numerical simulation and test study of the concentration distribution characteristics of different nozzle structure parameters, pneumatic parameters and fuel supply pressure differences are carried out, and the variation law is obtained.

The structure of direct nozzle is simple, and it has been widely used in aero-engine. Scholars at home and abroad have done a lot of research on it, but there is little research on the influence of structural parameters of direct nozzle on oil mist characteristics, especially on the oil mist field of direct nozzle behind bluff body stabilizer. The research contents of this paper include: the current situation of fuel atomization measurement methods, numerical simulation and experimental research at home and abroad, the numerical simulation and experimental research of concentration distribution characteristics under different nozzle structure parameters, aerodynamic parameters and fuel supply pressure difference, and the variation rules are obtained.