Wind-Driven Circulation in Small Shallow Lakes: Laboratory and Computational Experiments

摘要

The research deals mainly with laboratory experiments and computational experiments. The laboratory experiments present the circulation patterns caused by different winds in two lake models built in the wind tunnel: a paraboloidal lake and a reduction of the Blackbird Pond, near West Lafayette. The experiments were executed in order to have controlled standards of comparison with the numerical experiments. The computational part of the research has been performed by using the Fast Fourier Transform algorithm technique. This was considered necessary because of the high sensitivity of sediments patterns to small velocity errors. A detailed theoretical background for the simulation is presented and several numerical experiments are performed: on the paraboloidal lake, on the Blackbird Pond bathymetry, and on a special bathymetry for which an exact solution has been found.