DOI: 10.1615/TSFP6
DIRECT NUMERICAL SIMULATION OF A MODEL ESTUARY
要約
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.