CFD model for the time-dependent simulation of scale formation of 1.4307 stainless steel

This CFD model simulates the transient high-temperature oxidation and scale formation of steel samples under realistic combustion atmospheres in a semi-industrial furnace. The model couples flow, heat transfer, and gas composition with a surface reaction model based on an Arrhenius-type formulation, enabling time-resolved prediction of specific mass gain and oxide layer growth. It accounts explicitly for the influence of temperature and local flue gas composition, including the effects of CH₄/air and CH₄/oxygen combustion environments. The model captures linear-to-parabolic oxidation kinetics and identifies H₂O and CO₂ as dominant reaction partners, providing a predictive tool for studying material degradation and scale growth under industrial reheating air-fuel and oxy–fuel conditions.

HOW TO USE THE ANSYS FLUENT MODEL

1) Read .cas file in FLUENT 19R2 (or higher)

2) Read the examplary pre-tabulated chemistry data or create your own data using a reaction mechanism like GRI3.0 or chemical equilibrium and change boundary conditions accordingly

3) Compile the UDF (Air-fuel or oxy-fuel)

3) Run the calculation to obtain the solution data