|Table of Contents|

Experimental Investigation on Jet Impingementwith Vortex-Generating Tabs(PDF)

南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2015年04期
Page:
19-
Research Field:
能源与机械工程
Publishing date:

Info

Title:
Experimental Investigation on Jet Impingementwith Vortex-Generating Tabs
Author(s):
Yu Yezhen1; 2; Zhang Jingzhou2; 3; Wu Binbin1; Niu Baolian1; Li Yinglin1
（1.School of Energy and Mechanical Engineering，Nanjing Normal University，Nanjing 210042，China）
（2.Key Laboratory of Aerospace Power System of Jiangsu Province，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China）
（3.College of Energy and Power Engineering，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China）
Keywords:
impingement cooling; tabs; experimental investigation; double-rows jet orifices; temperature distribution
PACS:
V233.5
DOI:
-
Abstract:
The impingement cooling characteristics of a circular jet with tabs are investigated experimentally. It is analyzed that stream wise vortices formed by tabs affect the impingement cooling characteristics. The heat transfer laws of double-rows jet orifices are summarized. The results show that tabs can improve the impinging heat transfer properties for the impingement cooling with double-rows tabbed jet flows. The arrangement of jet orifices and the change of the stream wise space between the orifices have an important influence on the target temperature distribution. The staggered orifices have the larger valid cooling cope and the better cooling effect.

References:

［1］ GARDON R，AKFIRAT J C. The role of turbulence in determining the heat-transfer characteristics of impinging jets［J］. International journal of heat and mass transfer，1965，10（8）：1 261-1 272.
［2］ METZGER D E，FLORSCHUETZ L W. Heat transfer characteristics for inline and staggered array of circular jets with cross flow of spent air［J］. Journal of heat transfer，1979，101：526-531.
［3］ GOLDSTEIN R J，BEHBAHANI A I. Impingement of a circular jet with and without crossflow［J］. Int J Heat Transfer，1982，25（9）：1 377-1 382.
［4］ BEBAHANI A I，GLODSTEIN R J. Local heat transfer to staggered arrays of impinging circular air jets［J］. Journal of engineering for power，1983，105：354-360.
［5］ FLORSCHUETZ L W，ISODA Y. Flow distributions and discharge coefficient effects for jet array impingement with initial crossflow［J］. Journal of engineering for power，1983，105（3）：296-303.
［6］ AZEVEDO F A，WEBB B W，QUEIRO Z M. Pulsed air jet impingement heat transfer［J］. Experiment thermal and fluid science，1994，8：206-213.
［7］ LIU T，SULLIVAN J P. Heat transfer and flow structure in a excited circular impinging jet［J］. Int J Heat Mass Trans，1996，39（17）：3 695-3 706.
［8］ WEN M Y，JANG K J. An impingement cooling on a flat surface by using circular jet with longitudinal swirling strips［J］. International journal of heat and mass transfer，2003，46：4 657-4 667.
［9］ NAKOD P M，PRABHU S V，VEDULA R P. Heat transfer augmentation between impinging circular air jet and flat plate using finned surfaces and vortex generators［J］. Experimental thermal and fluid science，2008，32：1 168-1 187.
［10］ WHELAN B P，ROBINSON A J. Nozzle geometry effects in liquid jet array impingement［J］. Applied thermal engineering，2009，29：2 211-2 221.
［11］ CHAKROUN W M，ABDEL-RAHMAN A A，AL-FAHED S F. Heat transfer augmentation for air jet impinged on a rough surface［J］. Applied thermal engineering，1998，18：1 225-1 241.
［12］ YANG G Y，CHOI M S，LEE J S. An experimental study of slot jet impingement cooling on concave surface：effects of nozzle configuration and curvature［J］. International journal of heat and mass transfer，1999，42：2 199-2 209.
［13］ CORNARO C，FLEISCHER A S，ROUNDS M，et al. Jet impingement cooling of a convex semi-cylindrical surface［J］. International journal of thermal sciences，2001，40：890-898.
［14］ SHEVCHUK I V，SANIEI N. Impinging jet heat transfer over a rotating disk：exact solution and experiments［R］. USA：AIAA，2002.
［15］ RHEE D H，CHOI J H，CHO H H. Flow and heat （mass） transfer characteristics in an impingement/effusion cooling system with cross flow［J］. ASME journal of turbomachinery，2003，125：74-82.
［16］ 姚玉，张靖周，李永康.带三角形突片气膜冷却结构换热特性的数值研究［J］.航空动力学报，2006，21（4）：658-662.
YAO Y，ZHANG J Z，LI Y K. Numerical investigation on heat transfer of film cooling with delta-shaped tabs［J］. Journal of aerospace power，2006，21（4）：658-662. （in Chinese）
［17］ 杨成凤，张靖周，陈利强，等.前缘突脊倾斜气膜冷却效果的实验［J］.工程热物理学报，2008，29（7）：1 174-1 176.
YANG C F，ZHANG J Z，CHEN L Q，et al. Experimental investigation on film cooling effectiveness of the declining holes with tabs-ridged［J］. Journal of engineering thermophysics，2008，29（7）：1 174-1 176. （in Chinese）
［18］ KHALATOV A A，SYRED N，BOWEN P J，et al. Two-dimensional cyclone-jet cooling configuration：evalution of heat transfer and pressure losses［R］. USA：ASME，2001.

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Last Update: 2015-12-20