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

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2004, Vol. 25 ›› Issue (4): 339-342.

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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. 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

Abstract

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

ZHANG Jing-zhou;LI Yong-kang;TAN Xiao-ming;LI Li-guo. Numerical Computation and Experimental Investigation on Local Convective Heat Transfer Characteristics for Jet Array Impingement[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2004, 25(4): 339-342.

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

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