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在回流式传热风洞中，在速度比分别为０．３、１．０和２．０的条件下，对流向倾角分别为３０°、６０°和９０°的单孔气膜冷却射流与主流相互作用的速度和温度分布特征进行了详细的实验研究，并首次测量了锥形喷孔射流下游的温度和冷却效率的分布。总结出射流同主流相互作用下形成的速度边界层的等值线具有三种基本的分布形态，观察到纵向耦合涡的发展和变化趋势。孔形是决定气膜冷却效率的关键参数之一，锥顶角为３０°的锥形出口的喷孔较圆孔具有更宽的侧向覆盖区域，即使在高速比下其射流核心仍能较好地贴附在壁面上，因而具有较圆孔高得多的冷却效率。
In the return-flow heat transfer tunnel, the single-hole gas-liquid cooled jets with the inclination angles of 30 °, 60 ° and 90 °, respectively, at the speed ratios of 0.3, 1.0 and 2.0, The main velocity and temperature distribution characteristics of the mainstream interaction were studied in detail and the distribution of temperature and cooling efficiency downstream of the conical orifice jet was measured for the first time. It is concluded that the contour of the velocity boundary layer formed by interaction between the jet and the mainstream has three basic distribution patterns, and the development and the trend of the longitudinal coupling vortex are observed. The hole shape is one of the key parameters that determine the film cooling efficiency. The conical exit hole with a conical apex angle of 30 ° has a wider lateral coverage area than the circular hole. Even at high speed, Well attached to the wall, and therefore has a much higher than the circular hole cooling efficiency.