Conjugate heat transfer of an internally air-cooled nozzle guide vane and shrouds

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DOIResolve DOI: http://doi.org/10.1155/2014/146523
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TypeArticle
Journal titleAdvances in Mechanical Engineering
ISSN1687-8140
Volume2014
Article number146523
AbstractIn order to assess the life of gas turbine critical components, it is essential to adequately specify their aerothermodynamic working environments. Steady-state analyses of the flow field and conjugate heat transfer of an internally air-cooled nozzle guide vane (NGV) and shrouds of a gas turbine engine at baseline operating conditions are numerically investigated. A high-fidelity CFD model is generated and the simulations are carried out with properly defined boundary conditions. The features of the complicated flow and temperature fields are revealed. In general, the Mach number is lower and the temperature is higher on the NGV pressure side than those on the suction side. There are two high temperature regions on the pressure side, and the temperature across the middle section is relatively low. These findings are closely related to the locations of the holes and outlets of the cooling flow passage, and consistent with the field observations of damaged NGVs. As a technology demonstration, the results provide required information for the life analysis of the NGV/shrouds assembly and improvement of the cooling flow arrangement. © 2014 Leiyong Jiang et al.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); Aerospace (AERO-AERO)
Peer reviewedYes
NPARC number21272222
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Record identifierab4a5fd5-d6ce-4c48-8e11-016c00e1c2d5
Record created2014-07-23
Record modified2016-05-09
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