WIT Press

Numerical Study Of A Mixing Layer In Spatial And Temporal Development Of A Stratified Flow

Price

Free (open access)

Paper DOI

10.2495/AFM980291

Volume

18

Pages

19

Published

1998

Size

2,051 kb

Author(s)

M. Biage, M. S. Fernandes & P. Lopes Jr

Abstract

The two-dimensional plane shear layers for high Reynolds numbers are simulated using the transient explicit Spectral Collocation method. The fast and slow air streams are submitted to different densities. A temporally growing mixing layer, developing from a hyperbolic tangent velocity profile to which is superposed an infinitesimal white-noise perturbation over the initial condition, is studied. In the same way, a spatially growing mixing layer is also study. In this case, the flow in the inlet of the domain is perturbed by a time dependent white noise of small amplitude. The structure of the vorticity and the density are visualized for high Reynolds number for both cases studied. Broad-band kinetic energy

Keywords