Please use this identifier to cite or link to this item: https://idr.l1.nitk.ac.in/jspui/handle/123456789/10269
Full metadata record
DC FieldValueLanguage
dc.contributor.authorCoomar, N.-
dc.contributor.authorKadoli, R.-
dc.date.accessioned2020-03-31T08:18:49Z-
dc.date.available2020-03-31T08:18:49Z-
dc.date.issued2010-
dc.identifier.citationSadhana - Academy Proceedings in Engineering Sciences, 2010, Vol.35, 1, pp.1-17en_US
dc.identifier.urihttp://idr.nitk.ac.in/jspui/handle/123456789/10269-
dc.description.abstractInternal cooling passages and thermal barrier coatings (TBCs) are presently used to control metal temperatures in gas turbine blades. Functionally graded materials (FGMs), which are typically mixtures of ceramic and metal, have been proposed for use in turbine blades because they possess smooth property gradients thereby rendering them more durable under thermal loads. In the present work, a functionally graded model of an air-cooled turbine blade with airfoil geometry conforming to the NACA0012 is developed which is then used in a finite element algorithm to obtain a non-linear steady state solution to the heat equation for the blade under convection and radiation boundary conditions. The effects of external gas temperature, coolant temperature, surface emissivity changes and different average ceramic/metal content of the blade on the temperature distributions are examined. Simulations are also carried out to compare cooling effectiveness of functionally graded blades with that of blades having TBC. The results highlight the effect of including radiation in the simulation and also indicate that external gas temperature influences the blade heat transfer more strongly. It is also seen that graded blades with about 70% ceramic content can deliver better cooling effectiveness than conventional blades with TBC. 2010 Indian Academy of Sciences.en_US
dc.titleComparative analysis of steady state heat transfer in a TBC and functionally graded air cooled gas turbine bladeen_US
dc.typeArticleen_US
Appears in Collections:1. Journal Articles

Files in This Item:
File Description SizeFormat 
10269.pdf335.42 kBAdobe PDFThumbnail
View/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.