Modeling of Flow-Induced Corrosion with Nonuniform Boundary Conditions

Abstract

The fl ow-induced corrosion with nonuniform corrosion product concentration at the wall serving as boundary conditions in a slug fl ow, laminar fl ow, and turbulent fl ow was investigated. Analytical solutions were obtained. Dependence of the corrosion rate on the wall concentration distributions and the fl ow types were analyzed. One of the applications of the present study is to serve as a tool to predict the corrosion/precipitation in a nuclear reactor coolant system and to provide information on how to enhance the lifetime. The solution is partly validated by comparing the theoretical results with experimental results from a liquid lead loop.

Corrosion and deposition on the secondary circuit of steam generators

“…The chemical reaction may occur either in the bulk flow homogeneously or on the solid/liquid interface heterogeneously, or both [23]. The mass transfer is caused by the unsaturation of dissolving species at the interface between a dissolving oxide layer and a flowing fluid [24].…”