An experimental and numerical study of heat transfer from arrays of impinging jets with surface ribs

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	An experimental and numerical study of heat transfer from arrays of impinging jets with surface ribs
	Spring S; Xing YF(邢云绯); Weigand B
刊名	JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME
	2012-08-01
通讯作者邮箱	sebastian.spring@itlr.uni-stuttgart.de
卷号	134 期号:8 页码:082201
关键词	jet impingement impingement cooling impingement array surface ribs experimental numerical CFD TLC Liquid-Crystal Cross-Flow Circular Jets Staggered Arrays Spent Air Impingement Gas Systems Models
ISSN号	0022-1481
通讯作者	Spring, S ; Univ Stuttgart, Inst Aerosp Thermodynam ITLR, Pfaffenwaldring 31, D-70569 Stuttgart, Germany.
产权排序	[Spring, Sebastian;Weigand, Bernhard] Univ Stuttgart, Inst Aerosp Thermodynam ITLR, D-70569 Stuttgart, Germany; [Xing, Yunfei] Chinese Acad Sci, Inst Mech, Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China
合作状况	国际
中文摘要	A combined experimental and numerical investigation of the heat transfer characteristics within arrays of impinging jets with rib-roughened surfaces is presented. Two configurations are considered: One with an inline arrangement of jets and ribs oriented perpendicular to the direction of cross-flow and one with a staggered arrangement of jets and broken ribs aligned with the direction of cross-flow. For both cases, the jet Reynolds number is 35,000, the separation distance measures H/D = 3, the spent air is routed through one exit contributing to the maximum cross-flow condition, and the rib height and width is both 1 D. The experiments are carried out in perspex models using the transient liquid crystal method. Local jet temperatures are measured at several positions on the impingement plate to account for an exact evaluation of the heat transfer coefficient. In addition to the measurements, a numerical analysis using the commercial CFD software package ANSYS CFX is conducted. Heat transfer predictions are compared with those obtained from experiments with regards to local distributions as well as averaged quantities. A good overall agreement is found but discrepancies for local values need to be accepted. The present investigation also emphasizes that configurations including rib roughness elements should be compared based on the amount of transferred heat flux in order to account for the area enlarging effect. This allows a correct evaluation of the thermal performance.
学科主题	内流
分类号	二类/Q1
收录类别	SCI ; EI
资助信息	The financial support for this work by the Friedrich and Elisabeth Boysen Foundation is highly acknowledged.
原文出处	http://dx.doi.org/10.1115/1.4006155
语种	英语
WOS记录号	WOS:000306143200021
公开日期	2013-01-18
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/46608]
专题	力学研究所_高温气体动力学国家重点实验室
推荐引用方式 GB/T 7714	Spring S,Xing YF,Weigand B. An experimental and numerical study of heat transfer from arrays of impinging jets with surface ribs[J]. JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME,2012,134(8):082201.
APA	Spring S,Xing YF,&Weigand B.(2012).An experimental and numerical study of heat transfer from arrays of impinging jets with surface ribs.JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME,134(8),082201.
MLA	Spring S,et al."An experimental and numerical study of heat transfer from arrays of impinging jets with surface ribs".JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME 134.8(2012):082201.