自由射流可调喷管技术对比研究与试验验证  

Comparative research and experimental verification of adjustable nozzle technology for free jet

作　　者：陈鹏飞 吴锋 张有 王衡 CHEN Pengfei;WU Feng;ZHANG You;WANG Heng(AECC Sichuan Gas Turbine Establishment,Mianyang 621000,China;School of Power and Energy,Northwestern Polytechnical University,Xi’an 710129,China;Sichuan Provincial Key Laboratory of Aerodynamic Altitude Simulation for Civil Aviation,Mianyang 621000,China)

机构地区：[1]中国航发四川燃气涡轮研究院,四川绵阳621000 [2]西北工业大学动力与能源学院,西安710129 [3]民用航空动力高空模拟四川省重点实验室,四川绵阳621000

出　　处：《燃气涡轮试验与研究》2024年第1期1-11,共11页Gas Turbine Experiment and Research

基　　金：国家财政稳定支持项目(GJCZ-23);预研项目(3020402-20)。

摘　　要：为了适应自由射流高空模拟试验中马赫数连续可调对喷管设计的要求,针对等长高比情况下,单支点喷管流场品质与动态调节性能难以保证的特点,同时研究了单支点半柔性喷管和型面旋转喷管技术。首先,基于相同气动原理与设计方法,分别对单支点半柔性喷管的刚柔耦合型面技术和型面旋转喷管的设计点评价方法进行了研究;其次,通过数值计算,分别对这两类喷管的关键技术进行了验证分析,并在此基础上研制了用于技术验证的小尺寸模型喷管;最后,开展了该模型喷管的风洞验证试验研究。结果表明:这两种喷管技术均实现了良好的气动型面响应和动态调节性能,其流场品质优于规范指标要求,但单支点半柔性喷管的整体性能更优,为自由射流高空试验舱研究提供基础。In order to adapt to the high altitude jet simulation test of Mach number continuously adjustable nozzle design requirements for inferior taller than the case of a single pivot nozzle flow and dynamically adjust the quality is difficult to guarantee the performance characteristics,and study single fulcrum semiflexible nozzle and rotating nozzle profile technology.First,based on the same aerodynamic principles and design methods,respectively,on a single pivot semi-flexible nozzle rigid coupling type surface profile technology and rotating nozzle design point evaluation methods were studied;secondly,by numerical calculation,respectively for the two key technology categories nozzle validated analysis,and on this basis,developed a small-scale model nozzle technology for verification;and finally,to validate the model wind tunnel test study conducted nozzle.The results showed that both nozzle technologies have achieved a good aerodynamic profile response and dynamic performance adjustment,the flow field quality is better than specification target,but the overall performance of a single pivot semi-flexible nozzle better,high-altitude jet test cabin research provides support.

关 键 词：风洞试验 自由射流 喷管 变马赫数 气动型面 流场品质 

分 类 号：V211.73[航空宇航科学与技术—航空宇航推进理论与工程]