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。
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.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2008年第1期96-98,共3页
Journal of Engineering Thermophysics
基金
国家自然科学基金(No.50576046)
关键词
两相流
射流
湍流度
PDPA
two-phase flow
jet flow
turbulent intensity
PDPA