| Autor: |
Verbruggen, W., Mosselman, E., Zolezzi, G., Sloff, C.J. |
| Jazyk: |
angličtina |
| Rok vydání: |
2013 |
| Zdroj: |
RCEM 2013: 8th Symposium on River, Coastal and Estuarine Morphodynamics, Santander, Spain, 9-13 June 2013 |
| Popis: |
Local geometrical perturbations in alluvial channels can generate a pattern of alternate bars called ‘overdeepening’. Previous linear analyses and laboratory experiments showed that these bars arise downstream of perturbations in the relatively narrow and deep channels corresponding to subresonant conditions, but both upstream and downstream of perturbations in the relatively wide and shallow channels corresponding to superresonant conditions. Previous numerical computations reproduced alternate bars under subresonant conditions, but failed to do so under superresonant conditions until the recent 2D depth-averaged computations by van der Meer et al. (2011) using Delft3D. They managed to simulate bar formation under superresonant conditions, but observed discrepancies between the numerical results and theoretical and experimental findings. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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