Modeling of a Diffusion Controlling Oxidation Process with Scale Removal in Oxygen-Containing Liquid Flow

Document Type

Conference Proceeding

Publication Date

11-11-2008

Publication Title

ASME International Mechanical Engineering Congress and Exposition

Publisher

American Society of Mechanical Engineers

First page number:

167

Last page number:

177

Abstract

A diffusion controlling oxidation model, considering scale removal, is developed in an oxygen-containing liquid flow environment. Scale removal is implemented and the effect of the scale removal rate on the formation mechanism of the duplex oxide layer structure is analyzed in the model. The volume expansion effect caused by density difference is coupled with the weight gain during oxidation. A coordinate transform technique is employed to obtain the diffusion equations with advection term. The governing equations are non-dimensionalized and analogized with the Stefan problem and solved numerically by the finite difference method. The non-dimensional parameters are studied and the model is extended to an oxide growth model with duplex layer structure and noble elements. The model is benchmarked with previous results, and good agreement is obtained

Keywords

Flow (Dynamics); Fluid dynamics; Diffusion; Diffusion (Physics); Descaling; Descaling (Metals); Modeling; Oxidation; Oxygen

Disciplines

Fluid Dynamics | Materials Science and Engineering | Mechanical Engineering

Language

English

Permissions

Use Find in Your Library, contact the author, or interlibrary loan to garner a copy of the item. Publisher policy does not allow archiving the final published version. If a post-print (author's peer-reviewed manuscript) is allowed and available, or publisher policy changes, the item will be deposited.

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