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Investigation of Cooling Performances of a Non-Film-Cooled Turbine Vane Coated with a Thermal Barrier Coating Using Conjugate Heat Transfer
Prapamonthon P; Yooyen S; Sleesongsom S; Dipasquale D; Xu HZ; Wang JH; Ke ZQ
发表期刊ENERGIES
2018-04-01
卷号11期号:4
ISSN1996-1073
摘要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.
关键词Turbine Vane Heat Transfer Coefficient Thermal Barrier Coating Turbulence Intensity Conjugate Heat Transfer
DOI10.3390/en11041000
收录类别SCI ; EI
语种英语
WOS记录号WOS:000434703400311
关键词[WOS]FREESTREAM TURBULENCE
WOS研究方向Energy & Fuels
WOS类目Energy & Fuels
项目资助者Natural Science Foundation of China(51376168) ; King Mongkut's Institute of Technology Ladkrabang
论文分区二类
力学所作者排名1
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文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/77509
专题流固耦合系统力学重点实验室
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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,2018,11(4).
APA Prapamonthon P.,Yooyen S.,Sleesongsom S.,Dipasquale D.,Xu HZ.,...&Ke ZQ.(2018).Investigation of Cooling Performances of a Non-Film-Cooled Turbine Vane Coated with a Thermal Barrier Coating Using Conjugate Heat Transfer.ENERGIES,11(4).
MLA Prapamonthon P,et al."Investigation of Cooling Performances of a Non-Film-Cooled Turbine Vane Coated with a Thermal Barrier Coating Using Conjugate Heat Transfer".ENERGIES 11.4(2018).
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