Heat transfer in rectangular channels with porous wire mesh under impinging jet conditions
作者： Hsiang-Chu Sung , Yao-Hsien Liu
DOI: 10.1016/J.IJTHERMALSCI.2017.08.010
关键词:
摘要: Abstract Detailed heat transfer distribution in a rectangular channel under an array of impinging air jets was experimentally investigated using transient liquid crystal technique. The jet-to-jet spacing 4 and the jet-to-surface 3. fully or partially filled with porous wire meshes (filling ratios = 100%, 50% 25%) jet Reynolds numbers ranged from 2500 to 7700. Although literature data indicated that material enhanced overall rate, regional on target surface degraded because blockage breakup core flow. coefficient further reduced increase filling ratio. For channel, mesh located near contributed even lower transfer. All cases demonstrated decreased surface, average Nusselt number for case only unfilled case. impingement hindered, variation could prevent development local hot cold spots engineering applications.
nctu.edu.tw参考文章(30)
M.F. Koseoglu, S. Baskaya, The role of jet inlet geometry in impinging jet heat transfer, modeling and experiments International Journal of Thermal Sciences. ,vol. 49, pp. 1417- 1426 ,(2010) , 10.1016/J.IJTHERMALSCI.2010.02.009
GM AZAD, YIZHE HUANG, JE-CHIN HAN, Jet Impingement Heat Transfer on Pinned Surfaces Using a Transient Liquid Crystal Technique International Journal of Rotating Machinery. ,vol. 8, pp. 161- 173 ,(2002) , 10.1080/1023-620291910798
D. M. Kercher, W. Tabakoff, Heat Transfer by a Square Array of Round Air Jets Impinging Perpendicular to a Flat Surface Including the Effect of Spent Air Journal of Engineering for Power. ,vol. 92, pp. 73- 82 ,(1970) , 10.1115/1.3445306
Wu-Shung Fu, Hsin-Chien Huang, Thermal performances of different shape porous blocks under an impinging jet International Journal of Heat and Mass Transfer. ,vol. 40, pp. 2261- 2272 ,(1997) , 10.1016/S0017-9310(96)00320-1
Akhilesh P. Rallabandi, Dong-Ho Rhee, Zhihong Gao, Je-Chin Han, Heat transfer enhancement in rectangular channels with axial ribs or porous foam under through flow and impinging jet conditions International Journal of Heat and Mass Transfer. ,vol. 53, pp. 4663- 4671 ,(2010) , 10.1016/J.IJHEATMASSTRANSFER.2010.06.027
K. Jambunathan, E. Lai, M.A. Moss, B.L. Button, A review of heat transfer data for single circular jet impingement International Journal of Heat and Fluid Flow. ,vol. 13, pp. 106- 115 ,(1992) , 10.1016/0142-727X(92)90017-4
L. W. Florschuetz, C. R. Truman, D. E. Metzger, Streamwise Flow and Heat Transfer Distributions for Jet Array Impingement with Crossflow Journal of Heat Transfer-transactions of The Asme. ,vol. 103, pp. 337- 342 ,(1981) , 10.1115/1.3244463
Jungho Lee, Sang-Joon Lee, None, The effect of nozzle aspect ratio on stagnation region heat transfer characteristics of elliptic impinging jet International Journal of Heat and Mass Transfer. ,vol. 43, pp. 555- 575 ,(2000) , 10.1016/S0017-9310(99)00167-2
Ravi Yakkatelli, Qianhong Wu, Amy S. Fleischer, A visualization study of the flow dynamics of a single round jet impinging on porous media Experimental Thermal and Fluid Science. ,vol. 34, pp. 1008- 1015 ,(2010) , 10.1016/J.EXPTHERMFLUSCI.2010.03.004
Kok-Cheong Wong, Thermal analysis of a metal foam subject to jet impingement International Communications in Heat and Mass Transfer. ,vol. 39, pp. 960- 965 ,(2012) , 10.1016/J.ICHEATMASSTRANSFER.2012.05.021