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试验采用放大5倍的6×6(束棒)局部模型,流动介质为空气。采用一维激光多普勒测速仪测量稳态工况下的二维流场。激光多普勒测速仪有空间分辨率高、流场不受扰动和测量准确度高等优点。但它要
The experiment uses a 5 × magnification 6 × 6 (bundle) local model, the flow medium is air. A one-dimensional laser Doppler velocimeter was used to measure the two-dimensional flow field under steady-state conditions. Laser Doppler velocimeters have the advantages of high spatial resolution, undisturbed flow field and high measurement accuracy. But it wants