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Hier finden Sie wissenschaftliche Publikationen aus den FraunhoferInstituten. Numerical simulation of oxidation processes in a crossflow around tube bundles
 Applied mathematical modelling 59 (2018), pp.251271 ISSN: 0307904X 

 English 
 Journal Article 
 Fraunhofer ITWM () 
Abstract
An oxidation process is simulated for a bundle of metal tubes in a cross–flow. The fluid flow is governed by the incompressible Navier–Stokes equations. To describe the transport of oxygen, the corresponding convection–diffusion equation is applied. The key point of the model is related to the description of oxidation processes, taking into account the growth of a thin oxide film in the quasistationary approximation. Mathematical modeling of oxidant transport in a tube bundle is carried out in the 2D approximation. The numerical algorithm employed in the work is based on the finiteelement discretization in space and the Crank–Nicolson discretization in time. The tube rows of a bundle can be either inline or staggered in the direction of the fluid flow velocity. The growth of the oxide film on tube walls is predicted for various bundle structures using the developed oxidation model.