Modelling of Aqueous CO₂ Corrosion of Iron in Turbulent Pipe Flow Available to Purchase

Aqueous CO₂ corrosion of iron in turbulent pipe flow is modelled with a two-dimensional low Reynolds number k-ε turbulence model by simultaneously solving the conservation equations for mass, momentum, kinetic energy of turbulence and turbulent energy dissipation rate, along with the concentrations of various dissolved species. The effect of slow homogeneous chemical reaction of CO₂ hydration is incorporated into the model by including an extra source term in the transport equation for H₂CO₃. Other homogeneous chemical reactions are assumed to be in equilibrium with the equilibrium adjusted after each iteration. The cathodic reactions considered are the reduction of H₂CO₃, H⁺ and H₂O. The anodic reaction is iron dissolution. An iterative procedure is employed to calculate CO₂ corrosion rates. It involves the determination of surface concentrations of dissolved species and the fluxes of all the reacting species at the surface. The iteration ensures that mixed potential theory is satisfied on the surface and that the cathodic fluxes are balanced by the anodic fluxes at the surface. The results of parameter studies are compared to the previous experimental findings.