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A field equation for the distribution of striation thickness from impingement mixers
Author(s) -
May H.O.
Publication year - 1996
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.10445
Subject(s) - striation , turbulence , field (mathematics) , mechanics , diffusion , residence time (fluid dynamics) , computational fluid dynamics , distribution (mathematics) , materials science , diffusion equation , flow (mathematics) , residence time distribution , classical mechanics , physics , thermodynamics , mathematics , mathematical analysis , geology , composite material , geotechnical engineering , economics , economy , service (business) , pure mathematics
The striation thickness distribution for an impingement mixer is calculated applying the methods of computational fluid dynamics (CFD). The description is based on the three‐dimensional flow field equations together with a two‐equation turbulence model so that no assumption of the residence time distribution is necessary. A field equation is derived in order to describe the striation thickness where the stretching velocity is calculated using the statistical theory of turbulent diffusion. The distribution of striation thickness follows from the solution of this field equation.