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本文应用非实时测量原理成功地研制了一套适用于周期性瞬态测量的计数式LDV系统。用该系统测量了空气压力为1.0MPa、室温环境下,圆孔式和伞喷式两种喷嘴产生的瞬态喷雾中油粒子的轴向速度分量的时空分布。研究了不同5/8比较精度下,采样次数对测量精度的影响。分析了实验误差。
In this paper, a non-real-time measurement principle has successfully developed a set of counting LDV system suitable for periodic transient measurements. The system was used to measure the space-time distribution of the axial velocity components of the oil particles in the transient spray generated by the two kinds of nozzles, the circular orifice and the umbrella nozzle at the air pressure of 1.0 MPa at room temperature. The effect of sampling times on the measurement accuracy was studied under different 5/8 accuracy. The experimental error was analyzed.