| EPSRC Reference: |
GR/S73402/01 |
| Title: |
Shallow-water morphodynamics: a fundamental experimental and numerical study of sandbanks |
| Principal Investigator: |
Borthwick, Professor AGL |
| Other Investigators: |
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| Project Partners: |
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| Department: |
Engineering Science |
| Organisation: |
University of Oxford |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
02 February 2004 |
Ends: |
01 February 2007 |
Value (£): |
211,368
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| EPSRC Research Topic Classifications: |
| Coastal & Waterway Engineering |
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| EPSRC Industrial Sector Classifications: |
| No relevance to Underpinning Sectors |
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Summary on Grant Application Form |
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Morphodynamics is one of the most uncertain components in the prediction of coastal processes, and is of increasing strategic and economic importance. In this project, a fundamental study will be undertaken into sandbank dynamics in oscillatory tidal flows, which embody most of the complex sediment processes associated with dynamic turbulent boundary-layer and wake interaction. Detailed experimental tests will be carried out in the controlled laboratory environment of the UK Coastal Research Facility where effective scaling is possible. The project will provide unique data sets of high quality on the evolution of sandbanks in oscillatory flows that should be of major importance as benchmark data for morphodynamic modellers. The UKCRF tests will be carefully planned, based on information from pilot tests in a reversing flume and 4-weeks of preliminary tests in the UKCRF. Measurements will be taken of the sandbank evolution, local surface velocity field, velocity and sediment profiles through depth, free surface elevations, individual particle motions and the movement of stripes of different coloured sand. Two- and three- dimensional numerical models will also be developed to simulate non-equilibrium sand transport, validated and applied to the UKCRF sandbank tests. In addition to large-scale phenomena, small-scale phenomena at the wet/dry/sediment interface will be studied. Further micro-investigations at individual grain level will be attempted since there is concern about contaminated sand particle movement. As well as advanced, but conventional modelling, global and chaotic concepts will be investigated. While there has been considerable fundamental study of sediment transport in channels, effectively 1-D, this project will provide definitive data sets in large-scale 2-D flows for the first time, with simultaneous investigation of significant small-scale phenomena.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.ox.ac.uk |