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Digitale Medien

EFFECT OF SPANWISE SYSTEM ROTATION ON SPATIALLY DEVELOPING DEAN VORTICES (1996)

RANDRIARIFARA, THÉO ; BOTTARO, ALESSANDRO

Chichester : Wiley-Blackwell

International Journal for Numerical Methods in Fluids 23 (1996), S. 1275-1287

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Details

ISSN: 0271-2091

Schlagwort(e): Dean vortices ; system rotation ; Eckhaus instability ; centrifugal and coriolis forces ; Engineering ; Engineering General

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Maschinenbau

Notizen: Three-dimensional spatially developing Navier-Stokes calculations are carried out to simulate the flow in a curved, rotating channel. The competition between centrifugal and Coriolis forces, expressed by the ratio of the Dean number to the rotation number, gives rise to a variety of possible instability modes characterized by the presence of streamwise vortices. Cases in which the force produced by system rotation enhances or opposes the centrifugal force are treated and the effect on the ensuing instability are analysed. Evidence for a generalized Eckhaus instability of rotating Dean vortices is presented.

Zusätzliches Material: 10 Ill.

Materialart: Digitale Medien

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