Author(s): Wei Wu; Dongfang Liang
Linked Author(s): Dongfang Liang
Keywords: Tidal bore; Modelling; Simulation; Shallow water; Boussinesq
Abstract: A tidal bore is an integral part of our environment and cultural heritage. It is a series of waves propagating upstream with a sudden increase in flow depth that may form during spring conditions when the tidal range exceeds 4-6m. This paper concentrates on numerical modeling of the tidal bore propagation process. A hybrid of the two-dimensional Boussinesqtype model and the shallow water model are applied to simulate this natural wonder, which is solved using a shockcapturing TVD (Total Variation Diminishing) Lax-Wendroff scheme. Severn River bore is one of the most famous fluvial landmarks in Europe. This paper emphasizes on the propagation process of Severn River bore. The numerical results are validated by some existing experimental measurement data. Then the influence of some hydrodynamic parameters on the Severn River propagation process is studied. Parameters include the river flow rate, the bed friction and the development of tidal energy project in the Severn River estuary, which remains to be a controversy since it was put forward. The future results can provide people with a more comprehensive view on how to better protect the tidal bore and ecosystem.
Year: 2015