The paper gives details of the flow characteristics and concentration distributions in harbours and marinas, and around coastal structures such as breakwaters or headlands etc. Five harbour and four breakwater models were studied using a Sontek-ADV, which measures the three-components of velocity, and fluorometers to measure concentration distributions. The influence of the harbour size and the geometry of breadwaters on the flushing processes was studied. The width of the harbour entrance was found to play a significant role in the flushing processes. The 2-D DIVAST model was also used to calculate the flows and the solute transportation processes. The predicted eddy structures and the average concentration levels were found to compare favourably with the experimental results.
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