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Persistent URL http://purl.org/net/epubs/work/40227
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Record Id 40227
Title Numerical modelling of tidal propagation in the Severn Estuary using a depth-adapted non-orthogonal grid
Abstract With greater use being made of computational hydrodynamic and pollution transport models for water quality assessments of coastal and estuarine areas, increasing emphasis needs to be focused on providing an accurate treatment of the complex boundary configurations which are typical of coastal regions. This paper presents details of a depth-averaged two-dimensional numerical model which makes use of a curvilinear or boundary-fitted non-orthogonal coordinate system. The curvilinear approach provides an accurate representation of the complex shape of natural flow domains and avoids the approximate 'staircase' representation associated with models based upon regular Cartesian finite-difference grids. Special attention is given to the simulation of the exposure and re-submergence of the intertidal zones which cause the flow perimeter to change shape as the tide ebbs and flows. In addition, grid adaptation to deep water is used to improve the resolution of navigation channels. The versatility of the model is demonstrated by simulating the upper reaches of the Severn Estuary on the west coast of England.
Organisation CCLRC , CSE , CSE-CEG
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Language English (EN)
Type Details URI(s) Local file(s) Year
Journal Article WIT Transactions on Ecology and the Environment 43 (2000): 127-136. https://www.witpr…-environment/43/4017 2000
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