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Thermo‐chemo‐mechanical modeling of refractory behavior in service: Key points and new developments
Author(s) -
Blond Eric,
Nguyen Anh K.,
Bilbao Emmanuel,
Sayet Thomas,
Batakis Athanasios
Publication year - 2020
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.13499
Subject(s) - convergence (economics) , materials science , refractory (planetary science) , numerical analysis , percolation (cognitive psychology) , focus (optics) , computer simulation , numerical integration , key (lock) , partial differential equation , statistical physics , computer science , mathematics , metallurgy , physics , simulation , mathematical analysis , computer security , neuroscience , biology , optics , economics , economic growth
The lifespan of refractory results from a complex interaction between chemistry, thermal conditions, and mechanics. The development of numerical models able to predict the results of such complex multi‐physics couplings requires an intensive use of the thermodynamics of irreversible processes framework. Today, the main barriers to reach fully predictive simulations are: the access to relevant data at high temperature (chemical kinetics, chemical expansion coefficient, etc), the numerical complexity and the computational time. The theoretical framework is briefly illustrated on refractory lining applications with a focus on the impact of the swelling induced by corrosion. Then, the numerical difficulties to ensure the numerical convergence and the accuracy of the results when solving classical partial differential equations are examined. Finally, a new approach to model the capillary impregnation by slag, based on percolation theory, is proposed. The basics of this method and the first numerical results are presented.