Abstract

It is well known that a few kinds of internal waves, which are generated by the hydrodynamic instability of shear layer, can be seen in a densimetric exchange flow. The mixing process due to these internal waves as well as the propagation process of a density front is reproduced numerically by means of N · S equation. It is, pointed out through the considerations of the numerical results that the typical flow patterns with both the Kelvin-Helmholtz and Holmboe instability waves can be simulated by using the numerical model, though the turbulence'model should be introduced to reproduced the characteristics of internal waves such as the wave amplitude and the length of mixing layer precisely.

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