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APPLICATION OF NUMERICAL METHOD TO STUDY OF FLOW-INDUCED CORROSION —Ⅰ METAL CORROSION UNDER LAMINAR CONDITION |
Yuzhen Lin;;; |
北京化工大学材料科学与工程学院 |
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Abstract The corrosion of carbon steel in 3.5% NaCl solution under laminar condition was studied by combination of numerical method with experimental measureent. The results showed that the hydrodynamic parameters close to the material surface (shear stress τ,ass transfer coefficient κ)can describe more accurately the effect of flowing fluid on corrosion of material than those in bulk solution(flow velocity υ).Numeration and analysis were carried out on the basis of a mathematical model for flow-induced corrosion occured in rotating disk apparatus.It was found that the corrosion rate obtained from numerical method was almost equal to the measured corrosion rate,and that the corrosion mechanism of carbon steel in flowing single phase solution was further verified by numerical results.
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Received: 15 July 2005
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