封严篦齿腔内流动及旋涡分布和顶板换热特性的实验研究

详细信息

The investigation of flow field and heat transfer in cavity of labyrinth seal

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。
- 篦齿密封 /
- 涡 /
- 壁面效应 /
- 换热系数 /
- 雷诺数
Abstract: 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 lo-cal heat transfer coefficient distribution on the roof of labyrinth. Analyzing the results obtained at different Reynolds number and T/C, We found the influence on the velocity and pressure distribution in cavity of labyrinth and the influence of different Reynolds number and T/C on the heat transfer coefficient on the roof of labyrinth seal.