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http://dx.doi.org/10.5293/kfma.2015.18.3.038

Study on the Conjugate Heat Transfer Analysis Methodology of Thermal Barrier Coating on the Internal Cooled Nozzle  

Kim, Inkyom (Dept. of Mechanical Engineering, Hanyang University)
Kim, Jinuk (Dept. of Mechanical Engineering, Hanyang University)
Rhee, Dong-Ho (Engine Component Research Team, Korea Aerospace Research Institute)
Cho, Jinsoo (School of Mechanical Engineering, Hanyang University)
Publication Information
The KSFM Journal of Fluid Machinery / v.18, no.3, 2015 , pp. 38-45 More about this Journal
Abstract
In this study, two computational methodologies were compared to consider an effective conjugate heat transfer analysis technique for the cooled vane with thermal barrier coating. The first one is the physical modeling method of the TBC layer on the vane surface, which means solid volume of the TBC on the vane surface. The second one is the numerical modeling method of the TBC layer by putting the heat resistance interface condition on the surface between the fluid and solid domains, which means no physical layer on the vane surface. For those two methodologies, conjugate heat transfer analyses were conducted for the cooled vane with TBC layer having various thickness from 0.1 mm to 0.3 mm. Static pressure distributions for two cases show quite similar patterns in the overall region while the physical modeling shows quite a little difference around the throat area. Thermal analyses indicated that the metal temperature distributions are quite similar for both methods. The results show that the numerical modeling method can reduce the computational resources significantly and is quite suitable method to evaluate the overall performance of TBC even though it does not reflect the exact geometry and flow field characteristics on the vane surface.
Keywords
Thermal barrier coating; Internal cooled nozzle; Conjugate heat transfer; Computational fluid dynamics;
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Times Cited By KSCI : 1  (Citation Analysis)
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