STUDY OF AXISYMMETRIC NATURE IN 3-D SWIRLING FLOW IN A CYLINDRICAL ANNULUS WITH A TOP ROTATING LID UNDER THE INFLUENCE OF AXIAL TEMPERATURE GRADIENT OR AXIAL MAGNETIC FIELD

Year 2017, , 1588 - 1606, 04.10.2017

Subas Chandra Dash

https://doi.org/10.18186/journal-of-thermal-engineering.353737

Cited By: 10

Abstract

The three
dimensional swirling flow has been obtained by solving Navier Stokes equations,
expressed in cylindrical coordinate system, using finite difference technique
on a staggered grid. An explicit finite difference method using pressure
correction technique, for the solution of Navier-Stokes has been implemented to
solve three dimensional flows.   Present
study explores the 3-D axisymmetric nature of stratified swirling flow and
vortex breakdown in a cylindrical annulus cavity with top rotating lid. The
annulus is obtained by inserting a thin coaxial rod in cylindrical cavity. This
rod may be stationary or rotating depending on the particular study. Three
dimensional swirling flows in annuli have also been studied subjected to axial
temperature gradient or under the influence of axial magnetic field. Influence
of governing parameters
Re, Ri and Ha on the overall heat transfer has been investigated through
variation of the average Nusselt number with these parameters. Further, the present numerical results are shown to be in good
agreement with the available benchmark solutions under the limiting conditions.

Keywords

Three Dimensional, Swirling Flows, Magneto Hydrodynamics, Stratified Flow, Incompressible Fluid

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