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Influence of Cooling Hole Geometry and Material Conductivity on the Thermal Response of Cooled Silicon Nitride Plate
Author(s) -
Ali AbdulAziz,
Ramakrishna T. Bhatt
Publication year - 2008
Publication title -
ceramic engineering and science proceedings
Language(s) - English
Resource type - Book series
SCImago Journal Rank - 0.128
H-Index - 33
eISSN - 1940-6339
pISSN - 0196-6219
DOI - 10.1002/9780470294741.ch15
Subject(s) - thermal conductivity , materials science , silicon nitride , finite element method , thermal , composite material , ceramic , nitride , stress (linguistics) , structural engineering , thermodynamics , engineering , physics , layer (electronics) , linguistics , philosophy
To complement the effectiveness of ceramic materials and their applicability for turbine engine applications, a parametric study using finite element method is carried out. This study tackles thorough analyses of a thermal barrier coated plate specimen with cooling holes made out of Silicon Nitride (Si 3 N 4 ) where its thermal conductivity is varied in an attempt to minimize the thermal stresses and to optimize an ultimate state of stress. The thermal stress profile was generated for circular and square cooling channels. Lower stresses for a higher magnitude of thermal conductivity are reported. Contour plots for the stresses and the temperature are presented and discussed.

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