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Numerical Investigation of Control of Weakly Conductive Fluids by Lorentz Forces

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The objective of this paper is to develop an efficient control algorithm for managing flow around a circular cylinder in weakly conductive fluids. The Lorentz force is applied on the cylinder surface in the circumferential direction to control the flow. We investigate numerically the unsteady two-dimensional flow and characterize the different flow regimes by the Lattice Boltzmann method (LBM). Numerical results verify that the LBM methodology is a powerful numerical tool for simulating the flow around a circular cylinder in electromagnetic field, and that emphasis is placed on the exposure of physical phenomena as well as a quantitative detection of the flow field. Moreover, it is revealed that Lorentz forces can prevent the boundary layer from separation, reduce drag and lift, and suppress the shedding of vortices.
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Keywords: FLOW CONTROL; LATTICE BOLTZMANN METHOD; LORENTZ FORCES; WEAKLY CONDUCTIVE FLUIDS

Document Type: Research Article

Publication date: 01 March 2012

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  • ADVANCED SCIENCE LETTERS is an international peer-reviewed journal with a very wide-ranging coverage, consolidates research activities in all areas of (1) Physical Sciences, (2) Biological Sciences, (3) Mathematical Sciences, (4) Engineering, (5) Computer and Information Sciences, and (6) Geosciences to publish original short communications, full research papers and timely brief (mini) reviews with authors photo and biography encompassing the basic and applied research and current developments in educational aspects of these scientific areas.
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