PIV experimental study and numerical simulation of single expansion ramp nozzle supersonic flow field
PIV experimental study and numerical simulation of single expansion ramp nozzle supersonic flow field
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发表时间：
2012
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通讯作者：
Ma Jing
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作者：
Ma Jing
实验选用的TiO2具有良好的跟随性能和散射性能。采用粒子图像测速（PIV）和数值方法研究了不同压力比下单膨胀匝道喷管的流场。在实验中，成功地得到了流场的结构、上膨胀壁上的压力、速度矢量等。从处理后的图像中，可以清晰地观察到激波和膨胀波，并进一步分析了出口的速度。实验数据与计算流体力学（CFD）数据吻合较好。从而验证了PIV实验和CFD结果的准确性和可靠性。
The experiment choose TiO2 which had good following performance as well as scattering property.The flowfield of the single expansion ramp nozzle(SERN) under different pressure ratios was researched by particle image velocimetry(PIV) and numerical method.In the experiment,the structure of the flowfield,the pressure on the upper expansion wall,the velocity vector,and so on have been successfully obtained.From the processed images,the shock and expansion wave can be observed clearly,and the velocity at the outlet has been further analysized.The experimental data agreed very well with the data from the computational fluid dynamics(CFD).Therefore,the accuracy and reliability of the PIV experiment and the CFD result were both validated.