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Topological analysis of separation phenomena in liquid metal flow in sudden expansions. Part 1. Hydrodynamic flow

Published online by Cambridge University Press:  23 March 2011

C. MISTRANGELO
C. MISTRANGELO*
Affiliation:
Karlsruhe Institute of Technology (KIT), IKET, Herrmann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen 76344, Germany
*
†Present address: KIT, Campus North, Postfach 3640, 76021 Karlsruhe, Germany. Email address for correspondence: [email protected]
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Abstract

Numerical simulations are performed to study three-dimensional hydrodynamic flows in a sudden expansion of rectangular ducts. Separation phenomena are investigated through the analysis of flow topology and streamline patterns. Scaling laws describing the evolution of the reattachment length of the vortical areas that appear behind the cross-section enlargement are derived. The results discussed in this paper are required as a starting point to investigate the effects of an applied homogeneous magnetic field on separation phenomena in a geometry with a sudden expansion.

JFM classification

Waves/Free-surface Flows: Channel flow Mathematical Foundations: Topological fluid dynamics
Type
Papers
Information
Journal of Fluid Mechanics , Volume 674 , 10 May 2011 , pp. 120 - 131
Copyright
Copyright © Cambridge University Press 2011

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References

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