为了满足高超声速风洞建设的需要,开展了串联式超声速环形引射器系统的状态模拟及方案论证。结合已有的风洞尺寸,采用一维处理方法,针对试验马赫数4、6、8,对Φ2m高超声速风洞两级串联式超声速环形引射器进行方案设计,得到各级质量流量、前室总压和临界截面马赫数等参数。结果表明:Φ2m高超声速风洞采用串联式超声速环形引射器方案能保证风洞的正常运行,但气源系统和场地要求苛刻,风洞运行成本偏高。

To satisfy the need of the construction of hypersonic wind tunnel, the state simulation and conceptual study of the tandem supersonic annular air ejector were researched Based on the dimension of ready wind tunnel, the method of one dimension was used, the parameter and performance of the two-stage tandem supersonic annular air ejector in the Φ2m hypersonic wind tunnel were computed at different mach numbers form 4 to 8, total pressure, mass flow rate in different stage and mach number of critical section were given. The research indicates that the use of tandem supersonic annular air ejector could guarantee normal operation of the wind tunnel, but the air supply and space requirements are hard to meet, and the cost of operation is expensive.