Thermo-Chemo-Mechanical Modelling of Refractories Behavior in service: Keypoints and New Numerical Developments

Abstract : 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 (PDE) 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.
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https://hal-univ-orleans.archives-ouvertes.fr/hal-01968679
Contributor : Eric Blond <>
Submitted on : Thursday, January 3, 2019 - 9:40:12 AM
Last modification on : Thursday, January 17, 2019 - 2:20:05 PM

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  • HAL Id : hal-01968679, version 1

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Eric Blond, Anh Khoa Nguyen, Thomas Sayet, Athanasios Batakis, Emmanuel de Bilbao. Thermo-Chemo-Mechanical Modelling of Refractories Behavior in service: Keypoints and New Numerical Developments. Material Science and Technology (MS&T 2018), Oct 2018, Columbus, Ohio, United States. ⟨hal-01968679⟩

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