Hydrodynamics
of distributed Flow and Erosion-Corrosion Part 1 - Single-phase Flow Study. |
by |
J. Postlethwaite and S. Nesic |
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 distributed flow on mass transfer controlled erosion-corrosion.
Previously determined rate 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 |