Abstract
The effects of beach permeability on the swash hydrodynamics is at present still poorly understood. This has motivated a series of detailed free surface and subsurface flow measurements to be undertaken in a controlled large-scale laboratory environment using a Laser Induced Fluorescence (LIF) technique, pressure transducers and wetting front recordings for two immobile coarse-grained beaches. Experimental results show that air plays a significant role in the exchange between free surface and subsurface flows. A numerical model has been developed for swash on permeable beaches consisting of a I D free surface shock-capturing model, based on Shallow Water Equations, and a ID subsurface flow model. It captures the main features of swash and wetting front profiles. The combined insights from the experimental and numerical work will contribute to better understanding and modelling of swash and similar flows.
| Original language | English |
|---|---|
| Title of host publication | Coastal Engineering 2008 (in 5 volumes) |
| Subtitle of host publication | Proceedings of the 31st International Conference |
| Editors | Jane McKee Smith |
| Place of Publication | Singapore |
| Publisher | WORLD SCIENTIFIC PUBL CO PTE LTD |
| Number of pages | 13 |
| ISBN (Print) | 978-981-4277-36-5, 9814277363 |
| Publication status | Published - 22 Jul 2009 |
Keywords
- sediment transport
- equations