Adaptive Mesh Multi-Scale Modelling of Tidal Hydraulics and Material Transport

摘要

Multi-scale modelling for structured meshes is achieved by nesting high resolutionrngrids within lower resolution grids. By specifying high resolutions in areas ofrninterest only, computational cost can be reduced. Adaptive meshing can furtherrnoptimise computational cost by allowing nested grids to change size and position inrnorder to track a feature of interest such as a pollutant. This paper presents details ofrnan adaptive mesh, multi-scale model for tidal hydraulics and mass transport inrncoastal waters. The model was used to simulate coliform discharges from arnwastewater treatment plant in Galway Bay, Ireland. Results proved that the model isrncapable of predicting mass transport to a high degree of accuracy and that adaptivernmeshing provides an efficient alternative to the classical static grid nesting approach.