| EPSRC Reference: |
GR/M75563/01 |
| Title: |
EXPERIMENTAL STUDY OF GRADED SEDIMENTS UNDER LINEAR & NON-LINEAR WAVES |
| Principal Investigator: |
O'Donoghue, Professor T |
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| Department: |
Engineering |
| Organisation: |
University of Aberdeen |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 August 1999 |
Ends: |
31 July 2002 |
Value (£): |
149,889
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| EPSRC Research Topic Classifications: |
| Coastal & Waterway Engineering |
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| No relevance to Underpinning Sectors |
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Summary on Grant Application Form |
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Recent research indicates that selective sediment transport processes operate in the coastal environment so that the use of a single size to represent the sediments for transport prediction, is at the very least, questionable. It is now recognised that the distinct behaviour of different size fractions within the sediment bed and the interactions between the size fractions need to be considered in order to improve the prediction of sand transport under waves. The research will be based on a series of detailed oscillatory flow tunnel experiments involving a range of well-sorted and graded sand beds. It will concentrate on high-transport, sheet-flow conditions with near-bed flows corresponding to linear and non-linear sea waves. Results from the various graded and well-sorted sediment beds will be compared to isolate the behaviour of individual size fractions in order to determine the impact of the grading on the concentrations, sorting and transport of the size fractions. Experiments will also be conducted to study the effects of grading on the threshold of sheet-flow. The results will provide valuable insight into the nature of the inter-dependence of size fractions and suggest ways of accounting for the inter-dependence in sediment transport models.
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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.abdn.ac.uk |