航空学报 > 1993, Vol. 14 Issue (12): 636-638

平面叶栅内气-固两相流场的高速摄影

史峰, 伊景海, 徐忠   

  1. 西安交通大学动力机械工程系,西安 710049
  • 收稿日期:1992-07-06 修回日期:1992-03-09 出版日期:1993-12-25 发布日期:1993-12-25

EXPERIMENTAL INVESTIGATION ON GAS-PARTICLE FLOW IN CASCADE BY HIGH SPEED PHOTOGRAPH

Shi Feng, Yi Jing-hai, Xu Zhong   

  1. Department of Power Machinery Engineering, Xi'an Jiaotong University, Xi'an, 710049
  • Received:1992-07-06 Revised:1992-03-09 Online:1993-12-25 Published:1993-12-25

摘要: 两相流中以球形阳离子交换树脂(平均直径d_p=600μm)为固体粒子,其在流场中运动轨迹基本上是直线。粒子末与壁面碰撞时粒子最终速度可达来流速度的40%~60%。碰撞后速度下降,碰撞后与碰撞前速度之比与入射角β_1有关。通过实验数据拟合得到U_(p2)/U_(p1)=1.0+0.166β_1-1.293β_1~2+0.689β_1~3-0.00329β_1~4。该式与他人结果有差别,说明模拟实验需进行相似理论分析,以选择适当的粒子。

关键词: 叶栅, 气-固两相流, 高速摄影

Abstract: Optical measurements of solid particle velocities and collision process were made in cascade flow by the use of high-speed photogragh. The resin spheres with mean diameter of 600μm were injected into a cascade tunnel to produce the desired gas-particle flow. The film analysis provided the data for the particle velocities, paths and collision process. The results of this study are helpful for understanding the features of solid-particle's motion and collision process.

Key words: caseade, gas-solid two-phase flow, high speed photograph