分流式气动阀流阻及雾化特性研究

The Research on Flow Drag and Atomization Characteristics of Shunt Aerodynamic Valve

为研究一种新型气动阀—分流式气动阀的工作性能,文中在对该新型气动阀的工作机理进行分析的基础上,利用二维数值模拟方法研究了该气动阀的流阻和雾化特性,并将计算结果与钝体式气动阀进行对比。研究结果表明:相同条件下,分流式气动阀较钝体式气动阀的流阻特性要好,前者的效率大约是后者的1.84倍,此外,采用分流式气动阀的燃油雾化效果要明显优于钝体式气动阀。故可以得出以下结论:分流式气动阀的工作性能优于钝体式气动阀。

To research the performance of a new type of aerodynamic valve,a shunt aerodynamic valve,the flow drag and atomization characteristics of the new type aerodynamic valve were studied by numerical simulation based on the analysis of its working mechanism,and the calculated results were compared with the blunt block aerodynamic valve.The results show that the flow drag characteristic of the shunt aerodynamic valve is better than that of the blunt block aerodynamic valve,and the former efficiency is about 1.84 times as high as the latter one.Besides,the effect of fuel atomization using shunt aerodynamic valve is better than that of using blunt block aerodynamic valve.So,the performance of the shunt aerodynamic valve is better than that of the blunt block aerodynamic valve.