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Hydrodynamics of disturbed flow and erosion—corrosion. Part I — Single‐phase flow study
Author(s) -
Nešiĉ S.,
Postlethwaite J.
Publication year - 1991
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450690311
Subject(s) - turbulence , boundary layer , mass transfer , mechanics , flow (mathematics) , corrosion , erosion , materials science , geology , physics , metallurgy , geomorphology
Abstract Numerical simulations of turbulent flow have been used to determine the flow structure in a sudden pipe expansion, in order to explain the effects of disturbed flow on mass transfer controlled erosion–corrosion. Previously determined rates of mass transfer through the liquid boundary layer have been directly related to the predicted levels of near‐wall turbulence. When rust films are present, the turbulent fluctuations affect both the mass transfer through the boundary layer and the removal of the film. The determining resistance to mass transfer, under the conditions examined, was that of the rust film.