Modelling Thermal Conductivity Of Porous Thermal Barrier Coatings For High-Temperature Aero Engines Using Five Phase Model

Abstract

Thermal Barrier Coatings (TBC) are used to shield hot sections of gas turbine engines, helping to prevent the melting of metallic surfaces. This paper proposes a Five-phase model to calculate the effective thermal conductivity of a TBC, taking into consideration the effect of various defects. By comparing the predicted values with experimental results, it was shown that the proposed five-phase model can predict the thermal conductivity of ceramic coatings closer to the actual values.