THERMAL SCIENCE

International Scientific Journal

Dharmaraj Arumuga Perumal

,

Gundavarapu V.S. Kumar

,

Anoop K. Dass

LATTICE BOLTZMANN SIMULATION OF FLOW OVER A CIRCULAR CYLINDER AT MODERATE REYNOLDS NUMBERS

ABSTRACT
This work is concerned with Lattice Boltzmann computation of two-dimensional incompressible viscous flow past a circular cylinder confined in a channel. Computations are carried out both for steady and unsteady flows and the critical Reynolds number at which symmetry breaks and unsteadiness sets in is predicted. Effects of Reynolds number, blockage ratio and channel length are studied in some details. All the results compare quite well with those computed with continuum-based methods, demonstrating the ability and usefulness of the Lattice Boltzmann Method (LBM) in capturing the flow features of this interesting and fluid-mechanically rich problem.
KEYWORDS
two-dimensional, circular cylinder, confined channel, Lattice Boltzmann Method, D2Q9 model
PAPER SUBMITTED: 2011-09-18
PAPER REVISED: 2012-05-09
PAPER ACCEPTED: 2012-05-09
DOI REFERENCE: https://doi.org/10.2298/TSCI110908093A
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2014, VOLUME 18, ISSUE Issue 4, PAGES [1235 - 1246]
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Lattice Boltzmann simulation of flow over a circular cylinder at moderate Reynolds numbers

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