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Sixth International Symposium on Turbulence and Shear Flow Phenomena
June, 22-24, 2009 , Seoul National University, Seoul, Korea

DOI: 10.1615/TSFP6

DIRECT NUMERICAL SIMULATION OF A MODEL ESTUARY

pages 1148-1153
DOI: 10.1615/TSFP6.1830
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RESUMO

We investigate numerically the mixing of freshwater with ambient brine in a laboratory-scale estuary, along with associated particle settling processes. We first discuss and specify a numerical setup which takes the most important features into account, such that our configuration is relatively close to reality and employs correspondingly only little modeling. The flow is studied in a spatial framework in order to gain a statistically stationary solution which also provides time-averaged results. The analysis of the computational results is divided into two parts: first we investigate different aspects of the freshwater/saltwater interaction, and second we take a closer look at the transport of suspended particles as well as their settling to the ground. Particularly, we find a qualitatively good agreement of the particle settling mechanisms with laboratory experiments.

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