POLLUTANT TRANSPORT AND RESIDENCE TIME IN A DISTORTED SCALE-MODEL ANDA NUMERICAL-MODEL

A systematic investigation of the circulation, pollutant transport and residence time in a distorted scale model of the Windermere Basin was undertaken by using a numerical approach. A numerical hydrodynamic mo del was developed to simulate the circulation pattern in the basin. Th e experimentally validated flow circulation was used as input to the p ollutant transport model to simulate the transport of a pollutant cont inuously introduced at the inlet of the basin. The simulated results w ere found to be in good agreement with the experimental measurements. With the aid of the validated model, the influence of the wind, recirc ulation and dead zones, and construction of dikes on the residence tim e distributions in the basin were examined.