超音速气流作用下,机翼表面火花放电产生局部快速加热对分离点位置的影响

2019/12/27   下载量: 0

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应用领域 航空航天
检测样本 航空
检测项目
参考标准 暂无

采用LaVision公司的FlowMaster粒子成像测速系统。测量了超音速气流作用下,机翼表面的流场。研究了火花放电产生局部快速加热对分离点位置的影响。

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Experimental investigation of interaction between gas-dynamic perturbations caused
by long spark discharge and separation region on the surface of an aerodynamic model,
streamlined by supersonic airflow with Mach number M=2, is presented in this paper. A
NACA-airfoil with a relative thickness of 12% of the chord length was used as aerodynamic
model. With the help of the Particle Image Velocimetry method airflow was visualized at
various angles of attack, delays 0–100 μs relative to the moment of discharge initiation and at
various values of stored electric energy 0.1–10 J, that was spent for discharge creation. It was found that the flow disturbance caused by the discharge leads to a short-term displacement of separation point downstream.

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