Application of the Random Walk Particle Tracking for Convection-Diffusion Problem Within Strait of Gibraltar

摘要

A depth-averaged Lagrangian particle tracking method is used to examine the process of solute transport. The Random-Walk particle tracking (RWPT) method is based on the use of stochastic methods to describe the dispersive component of particle displacement, and it is practically exempt from the numerical dispersion. Its performance is examined by comparing it with the Eulerian method. Firstly, the model is used to simulate the strait of Gibraltar. Unlike the Eulerian methods, the Lagrangian (or particulate) methods require no meshing. The model hydrodynamic used for describing the free surface flow in the strait of Gibraltar was based on the Saint-Venant bidimensional equation for large scale simulation.