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Three‐dimensional turbulent flow in agitated vessels with a nonisotropic viscosity turbulence model
Author(s) -
Ju S. Y.,
Mulvahill T. M.,
Pike R. W.
Publication year - 1990
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.5450680101
Subject(s) - turbulence , k epsilon turbulence model , k omega turbulence model , turbulence modeling , mechanics , anemometer , physics , isotropy , reynolds stress equation model , flow (mathematics) , rushton turbine , classical mechanics , optics
Solutions of the time‐averaged equations of motion with a nonisotropic k‐e model were developed for the three‐dimensional turbulent flow field in turbine stirred tanks. These results were validated with the measurements of three velocity components with a hot wire anemometer and literature data. The nonisotropic turbulence model considered the rotation and curvature effect of the turbulence with a turbulent Richardson number term and accounted for the important three‐dimensional effects through the nonisotropy of the viscosity. Also, it was found that a frequently used isotropic k‐ϵ turbulence model did not describe this three‐dimensional turbulent flow field.