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Mass transfer from crystalline surfaces in a turbulent impinging jet part I. Transfer by erosion
Author(s) -
Giralt Francesc,
Trass Olev
Publication year - 1975
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.5450530508
Subject(s) - turbulence , materials science , jet (fluid) , erosion , shear stress , mechanics , coating , shear (geology) , composite material , critical resolved shear stress , stress (linguistics) , mass transfer , shear rate , geology , physics , viscosity , geomorphology , linguistics , philosophy
Mechanical erosion from two crystalline coating materials, naphthalene and trans‐cinnamic acid, in submerged turbulent impinging jets of water has been studied. In the absence of diffusion, the observed erosion rates in the wall jet region vary linearly with wall shear stress. Threshold shear stress values below which erosion may be neglected have been defined for both coating materials. Erosion rates in the impingement region also depend on the shear stress which, depending on the crystalline grain size, may interact with pressure forces.