The nonlinear nature of bottom friction in shallow flow complicates its analysis, particularly in idealised models. For tidal flows, Lorentz’ linearisation has been widely applied, using an energy criterion to specify the friction coefficient. Here we propose an extension of this approach to storm surges, leading to a friction coefficient that may gradually vary over a storm event. The derivation is provided along with first results for a single channel.
|Number of pages||3|
|Publication status||Published - 28 Jun 2017|
|Event||4th International Symposium on Shallow Flows, ISSF 2017 - Eindhoven University of Technology, Eindhoven, Netherlands|
Duration: 26 Jun 2017 → 28 Jun 2017
Conference number: 4
|Conference||4th International Symposium on Shallow Flows, ISSF 2017|
|Abbreviated title||ISSF 2017|
|Period||26/06/17 → 28/06/17|
- storm surges
- idealised modelling
- bottom friction
- Lorentz’ linearisation
Roos, P. C., Pitzalis, C., Lipari, G., Reef, K. R. G., & Hulscher, S. J. M. H. (2017). Time-dependent linearisation of bottom friction for storm surge modelling in the Wadden Sea. Abstract from 4th International Symposium on Shallow Flows, ISSF 2017, Eindhoven, Netherlands.