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本文应用莫尔条纹法测出了从图形和方形喷嘴里吹出的不完全膨胀气流的密度分布。实验表明,方形喷嘴喷出的气体的密度分布要比圆形喷嘴复杂得多而且在外形上有很大的不同,但沿着两个喷嘴气流轴的气流密度变化非常相似。
In this paper, Moiré fringe method was used to measure the density distribution of incompletely swept airflow blown out from the pattern and square nozzles. Experiments have shown that the density of the gas emitted by the square nozzle is much more complex than that of the circular nozzle and is quite different in appearance, but the gas flow density changes along the gas flow axes of the two nozzles are very similar.