摘要
自行设计了吸气式篦齿换热风洞并对篦齿腔内部旋涡分布及流场和篦齿顶板换热特性进行了详细的研究。测出了在不同雷诺数和齿隙比篦齿腔中旋涡分布和顶板换热规律。从机理上分析了雷诺数和齿隙比对篦齿腔内流动旋涡分布及顶板表面局部换热规律的影响。
We built a labyrinth heat transfer wind tunnel.Detailed experimental results on the flow field reveal the velocities and vortices distribution in the cavity of labyrinth seal and local heat transfer coefficient distribution on the roof of l abyrinth. Analyzing the results obtained at different Reynolds number and T/C , We found the influence on the velocity and pressure distribution in cavity o f labyrinth and the influence of different Reynolds number and T/C on the hea t transfer coefficient on the roof of labyrinth seal.
出处
《流体力学实验与测量》
CSCD
2000年第4期20-25,共6页
Experiments and Measurements in Fluid Mechanics
关键词
换热系数
封严篦齿
航空发动机
风洞
labyrinth seal
vortex
wall effect
heat transfer coeffic ient
Reynolds number
