中文摘要：

本文采用PDPA设备测量了不同材料（玻璃微珠和铜粉）、不同粒径（250μm和75μm）颗粒存在的条件下，两相圆湍射流中气相湍流度的分布。给出了喷口附近两相流中气相湍流度变化的规律。测量结果表明在喷口附近区域，速度梯度的变化是影响气相湍流度变化的主要因素。

英文摘要：

The gas-phase turbulent intensity under different particle materials （glass and copper beads） and different particle diameters （250 μm and 75 μm） in a two-phase round turbulent jet were measured. The distribution of the gas-phase turbulent intensities near the jet nozzle were obtained. Results show that the variation of gas-phase velocity gradient is the main factor which effects the gas-phase turbulent intensity.