周期性瞬态喷雾中粒子速度的LDV测量研究  

LDV Measurement of Drop Velocity in Transient-Periodic Sprays

作　　者：陈白欣[1] 李宏伟[1] 腾叙充 王荣生[1] 

机构地区：[1]大连理工大学

出　　处：《内燃机工程》1992年第3期44-50,66,共8页Chinese Internal Combustion Engine Engineering

摘　　要：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。A Digital-Frequency-Counter LDV system is set up for measureing the transient-periodic signal based on the theory of unreal-time measurement technique. By using this system, the axial drop velocity in transient sprays from a circular and a conical nozzle into ambient air with pressure up to 1.0MPa at room temperature was measured. The experiment error and accuracy are analysed.

关 键 词：瞬态喷雾 两相流动 速度场 LDV测量 

分 类 号：TK421.43[动力工程及工程热物理—动力机械及工程]