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Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
Heat Transfer Research
Импакт фактор: 0.404 5-летний Импакт фактор: 0.8 SJR: 0.264 SNIP: 0.504 CiteScore™: 0.88

ISSN Печать: 1064-2285
ISSN Онлайн: 2162-6561

Выпуски:
Том 51, 2020 Том 50, 2019 Том 49, 2018 Том 48, 2017 Том 47, 2016 Том 46, 2015 Том 45, 2014 Том 44, 2013 Том 43, 2012 Том 42, 2011 Том 41, 2010 Том 40, 2009 Том 39, 2008 Том 38, 2007 Том 37, 2006 Том 36, 2005 Том 35, 2004 Том 34, 2003 Том 33, 2002 Том 32, 2001 Том 31, 2000 Том 30, 1999 Том 29, 1998 Том 28, 1997

Heat Transfer Research

DOI: 10.1615/HeatTransRes.2015007514
pages 1039-1064

AN ASSESSMENT OF TURBULENCE MODELS FOR PREDICTING CONJUGATE HEAT TRANSFER FOR A TUBINE VANE WITH INTERNAL COOLING CHANNELS

Shaofei Zheng
Institute of Thermal Engineering, TU Bergakademie Freiberg, Gustav-Zeuner-Str. 7, 09599 Freiberg,Germany
Yidan Song
Engineering Simulation and Aerospace Computing (ESAC), Northwestern Polytechnical University, P.O. Box 552, 710072, Xi'an, Shaanxi, China
Gongnan Xie
Department of Mechanical and Power Engineering, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, China
Bengt Sunden
Division of Heat Transfer, Department of Energy Sciences, Lund University, P.O. Box 118, SE-22100, Lund, Sweden

Краткое описание

In this study, five models, including the standard k−ε (SKE), realizable k−ε (RKE), SST k−ω, transition k−kl−ω, and the v2f model, are considered to simulate air flow and heat transfer of a turbine guide vane. The object in this paper is the well-studied NASA C3X turbine vane, for which experimental data are available. Ten internal cylindrical cooling channels are used to cool the blade. Three-dimensional temperature distributions of the turbine vane were obtained by a fluid−solid conjugated model including the external aerodynamic flow, internal convection and heat conduction region within the metal vane. In order to validate the computational results, the temperature distributions, static pressure distributions, and heat transfer coefficient distributions along the vane external mid-span surface are compared with experimental data. The 4-5-2-1 arrangement of the C3X cascade is selected, and the fluid is assumed to be an ideal gas. The results reveal that the SST k−ω turbulence model performs quite well in predicting the conjugate heat transfer. Detailed heat transfer distributions in the main passage are also shown. The representative transitional behavior of the C3X vane on both pressure and suction surfaces is further analyzed. It suggests that the transition behavior plays a significant role in predictions of the boundary-layer behavior, wall temperature distribution, and heat transfer performance.