Numerical Investigation on Unsteady Effects of Hot Streak on Flow and Heat Transfer in a Turbine Stage

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	Numerical Investigation on Unsteady Effects of Hot Streak on Flow and Heat Transfer in a Turbine Stage
	An, Bai-Tao 1; Liu, Jian-Jun 1; Jiang, Hong-De 2
刊名	JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME
	2009-07-01
卷号	131 期号:3
关键词	unsteady flow hot streak three dimensional numerical simulation gas turbine
英文摘要	This paper presents a detailed flow and heat transfer characteristic analysis on gas turbine first-stage turbine under hot streak inlet conditions. Two kinds of inlet total temperature conditions are specified at the turbine stage inlet. The first is uniform inlet total temperature, and the second is hot streak 2D total temperature contour The two kinds of inlet conditions have the same mass-averaged total temperature and the same uniform inlet total pressure. The hot streak total temperature contours are obtained according to the exit shape of an annular-can combustor. The ratio of the highest total temperature in the hot streak to the mass-averaged total temperature is about 1.23, and one hot streak corresponds to two vane passages and four blade passages. Six hot streak circumferential positions relative to the Vane 1 leading edge varied from -2% to 81% pitch are computed and analyzed. The results show that hot streak obviously increases the nonuniform degree of vane heat load in comparison with the uniform total temperature inlet condition. The change in hot streak circumferential position leads to the circumferential parameter variation at stator exit and also leads to different transient periodic fluctuating characteristics of heat load and pressure on the rotor blade surface. The hot streak of relative pitch at 65% obtains a similar heat load for the two vanes corresponding to one hot streak and small fluctuation in the averaged heat load on the rotor blade. [DOI: 10.1115/1.2988172]
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Mechanical
研究领域[WOS]	Engineering
关键词[WOS]	MIGRATION
收录类别	SCI ; ISTP
语种	英语
WOS记录号	WOS:000268246000015
公开日期	2015-12-22
内容类型	期刊论文
源URL	[http://ir.etp.ac.cn/handle/311046/106425]
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	1.Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China 2.Tsinghua Univ, Dept Thermal Engn, Beijing 100084, Peoples R China
推荐引用方式 GB/T 7714	An, Bai-Tao,Liu, Jian-Jun,Jiang, Hong-De. Numerical Investigation on Unsteady Effects of Hot Streak on Flow and Heat Transfer in a Turbine Stage[J]. JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME,2009,131(3).
APA	An, Bai-Tao,Liu, Jian-Jun,&Jiang, Hong-De.(2009).Numerical Investigation on Unsteady Effects of Hot Streak on Flow and Heat Transfer in a Turbine Stage.JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME,131(3).
MLA	An, Bai-Tao,et al."Numerical Investigation on Unsteady Effects of Hot Streak on Flow and Heat Transfer in a Turbine Stage".JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME 131.3(2009).