내부냉각노즐의 열차폐코팅을 위한 복합열전달 해석기법 연구

Title
내부냉각노즐의 열차폐코팅을 위한 복합열전달 해석기법 연구
Other Titles
Study on the Conjugate Heat Transfer Analysis Methodology of Thermal Barrier Coating on the Internal Cooled Nozzle
Authors
조진수
Keywords
열차폐코팅; 내부냉각노즐; 복합열전달; 전산유체역학; Thermal barrier coating; Internal cooled nozzle; Conjugate heat transfer; Computational fluid dynamics
Issue Date
2015-06
Publisher
한국유체기계학회
Citation
한국유체기계학회 논문집, v. 제18권, NO 제3호, Page. 38-45
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.
URI
http://www.dbpia.co.kr/Journal/ArticleDetail/NODE06340743http://hdl.handle.net/20.500.11754/25756
ISSN
2287-9706
DOI
http://dx.doi.org//10.5293/kfma.2015.18.3.038
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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