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研制了分析脉冲射流动态压力信号的软件,作为评价这种信号的波形特征、频率结构及能量分布的依据。测试分析表明:自激脉冲喷嘴振荡腔室的几何尺寸显著地影响着射流的振荡效果,其有效喷距较普通喷嘴更长、更宽。
The software for analyzing the dynamic pressure signal of pulse jet was developed as the basis for evaluating the waveform characteristics, frequency structure and energy distribution of this signal. Test analysis shows that the geometry of self-excited pulsed nozzle oscillating chamber significantly affects the oscillating effect of the jet, and the effective jet distance is longer and wider than that of the ordinary jet.