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Three‐Dimensional CFD Simulation of Stratified Two‐Fluid Taylor‐Couette Flow
Author(s) -
Vedantam Sreepriya,
Joshi Jyeshtharaj B.,
Koganti Sudhir B.
Publication year - 2006
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.5450840303
Subject(s) - mechanics , taylor–couette flow , stratification (seeds) , computational fluid dynamics , couette flow , fluid dynamics , dissipation , instability , flow (mathematics) , physics , materials science , thermodynamics , seed dormancy , germination , botany , dormancy , biology
Two‐fluid Taylor‐Couette flow, with either one or both of the co‐axial cylinders rotating, has potential advantages over the conventional process equipment in chemical and bio‐process industries. This flow has been investigated using three‐dimensional CFD simulations. The occurrence of radial stratification, the subsequent onset of centrifugal instability in each phase, the cell formation and the dependency on various parameters have been analyzed and discussed. The criteria for the stratification, Taylor cell formation in each phase have been established. It can be stated that the analysis of single‐phase flow acts as the base state for the understanding of radial stratification of the two‐fluid flows. The extent of interface deformation also has been discussed. A complete energy balance has been established and a very good agreement was found between dissipation rate by CFD predictions and the energy input rate through the cylinder/s rotation.