两相圆湍射流喷口小突片对强化射流混合作用影响的流动显示  

Visualization of the turbulent two-phase jet with mixing tabs

作　　者：崔金雷[1] 张会强[1] 容易[1] 杨武兵[1] 王希麟[1] 

机构地区：[1]清华大学力学系,北京100084

出　　处：《实验流体力学》2005年第3期14-20,共7页Journal of Experiments in Fluid Mechanics

基　　金：国家自然科学基金(50176027)

摘　　要：通过流动显示研究了Re=2350,粒子平均直径分别为150μm和350μm的两相圆湍射流中喷口加装小突片对射流混合的作用。探讨了不同粒径颗粒的存在对喷口小突片的射流混合作用的影响。通过PDA测量验证了流动显示结果。表明在150μm和350μm颗粒存在的情况下,小突片使射流核心区缩短的作用更加明显,而对射流的扩散作用却有所抑制。The gas- particle turbulent round jets with 150μm and 350μm mean diameter particles were visualized with 2350 Reynolds number. The mixing effect of the tabs introduced at the nozzle exit plane was investigated in two - phase jets with different diameter particles. The results were validated by PDA measurements. The results showed that the presence of the particles restrained the increase in jet spreading with small tabs.

关 键 词：两相湍流 小突片 射流 流动显示 强化混合 

分 类 号：O358[理学—流体力学]