航空学报 > 2004, Vol. 25 Issue (4): 339-342

阵列射流冲击冷却局部对流换热特性的数值计算与实验研究

张靖周1, 李永康2, 谭晓茗1, 李立国1   

  1. 1. 南京航空航天大学能源与动力学院, 江苏南京 210016;2. 中国燃气涡轮研究院科技部, 四川新都 561000
  • 收稿日期:2003-07-11 修回日期:2004-02-17 出版日期:2004-08-25 发布日期:2004-08-25

Numerical Computation and Experimental Investigation on Local Convective Heat Transfer Characteristics for Jet Array Impingement

ZHANG Jing-zhou1, LI Yong-kang2, TAN Xiao-ming1, LI Li-guo1   

  1. 1. College of Energy and Power, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;2. Department of Science and Technology, China Gas Turbine Establishment, Xindu 610500, China
  • Received:2003-07-11 Revised:2004-02-17 Online:2004-08-25 Published:2004-08-25

摘要: 运用数值计算的方法对具有初始横流的阵列射流在不同的排列方式、不同的冲击间距和不同的横流/射流质量流量比下的流动换热进行了三维数值研究,并采用热色液晶测试技术对阵列射流冲击的冷却表面温度分布进行了试验研究,获得了每一股射流的冲击冷却局部对流换热系数分布的特征。研究结果表明本文的计算结果与实验特征是基本吻合的。

关键词: 射流冲击, 数值计算, 热显示, 液晶

Abstract: Three-dimensional numerical computation of flow and temperature field for jet array impingement is conducted to investigate the effects of the impingement space, the impinging hole arrangement and the initial crossflow on heat transfer characteristics. A high-resolution liquid crystal thermography technique is used for the experimental study on jet array impingement to map out the temperature distribution on the target surface. The qualitative and quantitative results are obtained and analyzed, which indicate that the agreement of present calculation and experimental data is reasonable.

Key words: jet impingement, numerical calculation, thermal visualization, liquid crystal