WIT Press


Simulation Of Thermal Barrier Coating Behaviour During Dynamic Thermal Loading By The Exodus Method

Price

Free (open access)

Paper DOI

10.2495/CMEM070481

Volume

46

Pages

10

Published

2007

Size

730 kb

Author(s)

J. Sroub, M. Honner & Z. Vesely

Abstract

This paper deals with the application of the stochastic Exodus method in simulation of the heat transfer processes in the multi-layer structure of thermal barrier coating. A 2D computer simulation model of thermal barrier behaviour during its dynamic thermal loading is presented. The Exodus stochastic simulation method has been applied to solve the indirect thermal problem in order to determine TBC surface temperature and heat flux from the temperatures measured inside the sample. Comparison of the computer results with the result of the thermography measurement is presented to show capabilities of the simulation model. Keywords: Exodus simulation method, computer modelling, thermal barrier coatings, thermography measurement. 1 Introduction Thermal barriers protect material of machine parts against high temperatures and thermal shocks. Thermal barriers usually represent a heterogeneous multilayer coating deposited on the surface of thermally loaded machine parts those temperature should be decreased. The Exodus method [1], which is a modification of the Monte Carlo method [2], has been used, in order to determine the transient state distribution of barrier dynamic behaviour during thermal shocks in this paper. From the physical point of view, it concerns the problem of a non-stationary heat distribution in a structured system involving several thin layers of thermal barrier [3] and

Keywords

Exodus simulation method, computer modelling, thermal barrier coatings, thermography measurement.