Abstract
Existing model studies on sandwave dynamics point to the importance of turbulence, and particularly its temporal and spatial structure. We present an idealized model of sandwave formation, in which turbulence is accounted for by adopting a time- and depth-dependent eddy viscosity. Following linear stability analysis, the basic and perturbed flow solutions are obtained using a spectral method involving eigenfunctions that simplify the vertical stress term. First model results show favourable convergence properties of the basic state, expressing the generation of higher harmonics due to the time-dependent eddy viscosity. The perturbed state, which requires further investigation in detail, reveals large flow gradients close to the bed.
| Original language | English |
|---|---|
| Title of host publication | MARID 2013 |
| Subtitle of host publication | 4th International Conference on Marine and River Dune Dynamics. Bruges, Belgium, 15-17 April 2013 |
| Editors | V. van Lancker, T. Garlan |
| Place of Publication | Oostende, Belgium |
| Publisher | VLIZ |
| Pages | 235-240 |
| ISBN (Print) | 978-2-11-128352-7 |
| Publication status | Published - 15 Apr 2013 |
| Event | MARID IV Marine and River Dune Dynamics 2013 - Provinciaal Hof, Brugge, Belgium Duration: 15 Apr 2013 → 17 Apr 2013 Conference number: 4 |
Publication series
| Name | VLIZ Special publication |
|---|---|
| Publisher | VLIZ |
| Volume | 65 |
| ISSN (Print) | 1377-0950 |
Workshop
| Workshop | MARID IV Marine and River Dune Dynamics 2013 |
|---|---|
| Abbreviated title | MARID IV |
| Country/Territory | Belgium |
| City | Brugge |
| Period | 15/04/13 → 17/04/13 |
| Other | 15-04-2013 - 17-04-2013 |