Time-dependent linearisation of bottom friction for storm surge modelling in the Wadden Sea

Pieter C. Roos, Chris Pitzalis, Giordano Lipari, Koen R.G. Reef, Suzanne J.M.H. Hulscher

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Abstract

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.
Original languageEnglish
Number of pages3
Publication statusPublished - 28 Jun 2017
Event4th International Symposium on Shallow Flows, ISSF 2017 - Eindhoven University of Technology, Eindhoven, Netherlands
Duration: 26 Jun 201728 Jun 2017
Conference number: 4
http://issf2017.tue.nl/
http://issf2017.tue.nl/program/programme_ISSF.pdf

Conference

Conference4th International Symposium on Shallow Flows, ISSF 2017
Abbreviated titleISSF 2017
CountryNetherlands
CityEindhoven
Period26/06/1728/06/17
Internet address

Keywords

  • storm surges
  • idealised modelling
  • bottom friction
  • Lorentz’ linearisation

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    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.