Article Dans Une Revue High Temperature Corrosion of Materials Année : 2025

Computational Fluid Dynamics Simulation of Chromia Volatilization and Gas-Phase Evolution during Oxidation of Chromia-Forming Alloy: Cross-Linked Influence of Local Gas Velocity and Confined Geometries

Résumé

An experimentally validated and self-standing CFD (computational fluid dynamics) model was used to analyze chromia volatilization under high-velocity conditions close to industrial applications range, in wet air and pure O2 environment at 800 and 900 ℃. A rig of complex geometry with several lined-up samples was designed. The simulations revealed the combined and non-trivial influences of gas-phase enrichment from upstream samples, local gas velocity and ratio between sample surface and corresponding free volume for gas flow. The CFD results also validated the often-used analytical approach for single sample planar geometries. For more complex situations, the CFD route is necessary.

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hal-05171923 , version 1 (22-07-2025)

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Sharvan Kumar, Hugues Vergnes, Brigitte Caussat, Aurélie Vande Put. Computational Fluid Dynamics Simulation of Chromia Volatilization and Gas-Phase Evolution during Oxidation of Chromia-Forming Alloy: Cross-Linked Influence of Local Gas Velocity and Confined Geometries. High Temperature Corrosion of Materials, 2025, 102 (4), pp.22. ⟨10.1007/S11085-025-10343-5⟩. ⟨hal-05171923⟩
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