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On the two-dimensional flow in a sudden expansion with large expansion ratios

2005; American Institute of Physics; Volume: 17; Issue: 2 Linguagem: Inglês

10.1063/1.1851493

1527-2435

Antonio Revuelta,

Computational Fluid Dynamics and Aerodynamics

In this Brief Communication, the two-dimensional laminar flow of an incompressible viscous jet through a channel with a sudden expansion is analyzed in the case of a large expansion ratio. It is shown that, when the jet Reynolds number is sufficiently large, the momentum exchange between the incoming jet and the recirculating fluid determines the structure and the scales of the resulting flow, as well as the critical conditions for appearance of asymmetric solutions.