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进气道出口旋流是影响进气道/发动机相容性中的一个重要因素。为在地面试验中评价进气道旋流对发动机稳定性的影响,设计了叶片式旋流发生器,并在风洞中进行了整体涡旋流、对涡旋流两种基本旋流流场的模拟,实验中利用在固定马赫数下校准的五孔探针测量了所模拟的旋流场。风洞实验结果表明,按照不同布局方式来安装叶片,可以得到不同形式的旋流场;旋流发生器叶片攻角对旋流强弱的影响较为明显;旋流的诱导速度对旋流中心位置有很大的影响。
Intake port swirl is an important factor affecting inlet / engine compatibility. In order to evaluate the influence of intake swirling on engine stability in ground test, a vane vortex generator was designed and the overall swirling flow was carried out in the wind tunnel. Two basic swirling flow fields Simulations were performed in which the simulated swirl field was measured using a five-hole probe calibrated at a fixed Mach number. The results of wind tunnel experiment show that different forms of vortex flow field can be obtained according to different layout methods. The influence of swirl generator blade angle on swirl flow is more obvious. The induced velocity of swirl flow affects the swirl flow center Have a great impact.