张净玉

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教授 博士生导师

招生学科专业:
动力工程及工程热物理 -- 【招收硕士研究生】 -- 能源与动力学院
航空宇航科学与技术 -- 【招收博士、硕士研究生】 -- 能源与动力学院
能源动力 -- 【招收博士、硕士研究生】 -- 能源与动力学院

性别:女

毕业院校:南京航空航天大学

学历:博士研究生毕业

学位:工学博士学位

所在单位:能源与动力学院

联系方式:zjyhxm@nuaa.edu.cn

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Experimental investigation on the overall cooling effectiveness of t-type impinging-film cooling

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所属单位:能源与动力学院

发表刊物:APPLIED THERMAL ENGINEERING

关键字:Impinging-film cooling Overall cooling effectiveness Combustor Aero-engine Liner

摘要:This paper presents an experimental investigation of impinging-film cooling concerning the effects of various factors on overall cooling effectiveness eta. The factors include blowing ratio M (0.31 <= M <= 1.84), non-dimensional jet-to-plate pitch Zn/d (1 <= Zn/d <= 2), non-dimensional spacing of jet holes Yn/d (1.6 <= Yn/d <= 2.4) and diameter of jet hole. The results show that overall cooling effectiveness invariably increases with a raise in blowing ratio. As non-dimensional jet-to-plate pitch increases, the cooling performs better. The decline of non-dimensional spacing of jet holes improves the overall cooling effectiveness at higher blowing ratios (M >= 0.91), which was not observed in cases with low blowing ratios (M <= 0.61). The variation of hole diameter (1.0-1.8 mm) has little influence on cooling performance. (c) 2017 Elsevier Ltd. All rights reserved.

ISSN号:1359-4311

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发表时间:2018-01-05

合写作者:Yuan Ce,Ji Pengfei,Wei Jieli,何小民

通讯作者:Yuan Ce,张净玉