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IMECH-IR  > 流固耦合系统力学重点实验室(2012-)  > 期刊论文
Title:
Investigation of Cooling Performances of a Non-Film-Cooled Turbine Vane Coated with a Thermal Barrier Coating Using Conjugate Heat Transfer
Author: Prapamonthon P; Yooyen S; Sleesongsom S; Dipasquale D; Xu HZ; Wang JH; Ke ZQ
Source: ENERGIES
Issued Date: 2018-04-01
Volume: 11, Issue:4
English Abstract: The aim of this paper is to numerically investigate cooling performances of a non-film-cooled turbine vane coated with a thermal barrier coating (TBC) at two turbulence intensities (Tu = 8.3% and 16.6%). Computational fluid dynamics (CFD) with conjugate heat transfer (CHT) analysis is used to predict the surface heat transfer coefficient, overall and TBC effectiveness, as well as internal and average temperatures under a condition of a NASA report provided by Hylton et al. [NASA CR-168015]. The following interesting phenomena are observed: (1) At each Tu, the TBC slightly dampens the heat transfer coefficient in general, and results in the quantitative increment of overall cooling effectiveness about 16-20%, but about 8% at the trailing edge (TE). (2) The protective ability of the TBC increases with Tu in many regions, that is, the leading edge (LE) and its neighborhoods on the suction side (SS), as well as the region from the LE to the front of the TE on the pressure side (PS), because the TBC causes the lower enhancement of the heat transfer coefficient in general at the higher Tu. (3) Considering the internal and average temperatures of the vane coated with two different TBCs, although the vane with the lower thermal conductivity protects more effectively, its role in the TE region reduces more significantly. (4) For both TBCs, the increment of Tu has a relatively small effect on the reduction of the average temperature of the vane.
Keyword: turbine vane ; heat transfer coefficient ; thermal barrier coating ; turbulence intensity ; conjugate heat transfer
Language: 英语
Indexed Type: SCI ; EI
DOI: 10.3390/en11041000
DOC Type: Article
WOS Subject: Energy & Fuels
WOS Subject Extended: Energy & Fuels
WOS Keyword Plus: FREESTREAM TURBULENCE
WOS ID: WOS:000434703400311
ISSN: 1996-1073
Funder: Natural Science Foundation of China(51376168) ; King Mongkut's Institute of Technology Ladkrabang
Classification: 二类
Ranking: 1
Citation statistics:
Content Type: 期刊论文
URI: http://dspace.imech.ac.cn/handle/311007/77509
Appears in Collections:流固耦合系统力学重点实验室(2012-)_期刊论文

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Recommended Citation:
Prapamonthon P,Yooyen S,Sleesongsom S,et al. Investigation of Cooling Performances of a Non-Film-Cooled Turbine Vane Coated with a Thermal Barrier Coating Using Conjugate Heat Transfer[J]. ENERGIES,2018-04-01,11(4).
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