NUMERICAL INVESTIGATION OF A 3-D FLOW PAST AN IMPENETRABLE ROTATING MICROPARTICLE AT LOW AND MODERATE REYNOLDS NUMBERS

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MEYGOUN POURI M.R.; ATEFI GH.A.; NIAZMAND H.; MIRBOZORGI SEYED ALI

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Journal: Journal of Aerospace Mechanics Year:2007 | Volume:3 | Issue:2 Page(s): 73-84

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Title

NUMERICAL INVESTIGATION OF A 3-D FLOW PAST AN IMPENETRABLE ROTATING MICROPARTICLE AT LOW AND MODERATE REYNOLDS NUMBERS

Author(s)

MEYGOUN POURI M.R. | ATEFI GH.A. | NIAZMAND H. | MIRBOZORGI SEYED ALI | Issue Writer Certificate

Keywords

ROTATING SUSPENDED PARTICLEQ3

3-D FLOWQ3

BODY FITTED COORDINATEQ4

Abstract

Computations are performed to determine the steady 3-D viscous fluid flow forces acting on an impenetrable rotating spherical suspended particle at low and moderate Reynolds numbers in the range of 0.1£Re£100 . In order to extend the capabilities of the [mite volume method, the boundary (body) fitted coordinates (BFC) method is used. Transformation of the governing partial differential equation to algebraic relations is based on the [mite volume method and collocated variables arrangement. For solving the algebraic relations, the TDMA in a periodic state is used. To approximate the convective fluxes, the differencing scheme of Van Leer is used and the SIMPLEC algorithm handles the linkage between velocity and the pressure. Rotation increases the drag and lift forces exerted by flow at the surface of on the sphere. Using velocity components in Cartesian coordinates causes slight decrease in the run time of program with respect to using it in contra-variant and covariant coordinates. The flow patterns are changed with increasing rotation at x-y plane, but flow at x-y plane remains symmetric the present numerical results are in complete accord with other results of flow around a rotating sphere.

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