Two-phase velocity fields in a round turbulent jet with Reynolds number 8500 were measured by phase Doppler Particle Analyzer (PDPA).
采用相多普勒颗粒分析仪(PDPA)测量了雷诺数为8500的两相圆湍射流速度场，研究了两种大粒径颗粒对湍流的调制作用。
Detailed spray characteristics were obtained for a dual orifice atomizer using a phase Doppler particle analyzer (PDPA) in this study.
应用相多普勒粒度分析仪(PDPA)获得了双油路喷嘴详细的喷雾特性。
Its appliance shown that the development of the traverse system is successful, the system is stable, reliable, and it can be cooperated with the PDPA system.
通过应用表明：该系统的研制是成功的，系统运行稳定、可靠，激光测速系统可与移测架系统配合使用。
The PDPA measured point data were integrated into the line averaged drop sizes over radial traverses and the cross section averaged sizes over the whole measured sections.
将PDPA测得的空间点数据分别沿扫描径向和所在测量截面积分，得到液滴的线平均和面平均直径。 PDPA的线积分数据比马尔文仪测得的线积分值要大；
The dilute gas-particle flows in a cyclone chamber with axial and tangential inlers of different swirl numbers were studied by using a Phase-Doppler Particle Anemometer(PDPA).
利用相位多普勒仪（PDPA）系统研究了不同旋流数下突扩旋风筒内气粒两相湍流特性的变化规律。
The primitive atomization mechanism was discussed, and the system parameters, measurement principles and measurement process of 3D phase doppler particle anemometer (PDPA) were presented.
初步探讨了旋芯式喷嘴的雾化机理，简述了三维相位多普勒粒子测速仪（PDPA）的系统参数、测量原理和测量过程。
The effect of wall roughness on gas-particle flows in a horizontal backward-facing step is studied using a phase-Doppler particle anemometer (PDPA) by measuring the mean and RMS particle velocities.
用相位多普勒颗粒测速仪（PDPA）测量了颗粒的平均与脉动速度，研究了壁面粗糙度对水平后台阶气粒两相流动的影响。
The effect of wall roughness on gas-particle flows in a horizontal backward-facing step is studied using a phase-Doppler particle anemometer (PDPA) by measuring the mean and RMS particle velocities.
用相位多普勒颗粒测速仪（PDPA）测量了颗粒的平均与脉动速度，研究了壁面粗糙度对水平后台阶气粒两相流动的影响。
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