Tip Clearance Effects on Inlet Hot Streak Migration Characteristics in High Pressure Stage of a Vaneless Counter-Rotating Turbine

CORC > 工程热物理研究所 > 中国科学院工程热物理研究所 > 中国科学院工程热物理所（论文库） > 期刊论文（SCI）

	Tip Clearance Effects on Inlet Hot Streak Migration Characteristics in High Pressure Stage of a Vaneless Counter-Rotating Turbine
	Zhao Qingjun; Du Jianyi; Wang Huishe; Zhao Xiaolu; Xu Jianzhong
刊名	JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME
	2010
卷号	132 期号:1
英文摘要	In this paper, three-dimensional multiblade row unsteady Navier-Stokes simulations at a hot streak temperature ratio of 2.0 have been performed to reveal the effects of rotor tip clearance on the inlet hot streak migration characteristics in high pressure stage of a vaneless counter-rotating turbine. The numerical results indicate that the migration characteristics of the hot streak in the high pressure turbine rotor are dominated by the combined effects of secondary flow, buoyancy, and leakage flow in the rotor tip clearance. The leakage flow trends to drive the hotter fluid toward the blade tip on the pressure surface and to the hub on the suction surface. Under the effect of the leakage flow, even partial hotter fluid near the pressure surface is also driven to the rotor suction surface through the tip clearance. Compared with the case without rotor tip clearance, the heat load of the high pressure turbine rotor is intensified due to the effects of the leakage flow. And the results indicate that the leakage flow effects trend to increase the low pressure turbine rotor inlet temperature at the tip region. The air flow with higher temperature at the tip region of the low pressure turbine rotor inlet will affect the flow and heat transfer characteristics in the downstream low pressure turbine. [DOI: 10.1115/1.3103925]
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Mechanical
研究领域[WOS]	Engineering
收录类别	SCI
语种	英语
WOS记录号	WOS:000270105600005
公开日期	2015-12-22
内容类型	期刊论文
源URL	[http://ir.etp.ac.cn/handle/311046/106471]
专题	工程热物理研究所_中国科学院工程热物理所（论文库）_期刊论文（SCI）
作者单位	Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zhao Qingjun,Du Jianyi,Wang Huishe,et al. Tip Clearance Effects on Inlet Hot Streak Migration Characteristics in High Pressure Stage of a Vaneless Counter-Rotating Turbine[J]. JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME,2010,132(1).
APA	Zhao Qingjun,Du Jianyi,Wang Huishe,Zhao Xiaolu,&Xu Jianzhong.(2010).Tip Clearance Effects on Inlet Hot Streak Migration Characteristics in High Pressure Stage of a Vaneless Counter-Rotating Turbine.JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME,132(1).
MLA	Zhao Qingjun,et al."Tip Clearance Effects on Inlet Hot Streak Migration Characteristics in High Pressure Stage of a Vaneless Counter-Rotating Turbine".JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME 132.1(2010).