Preprints
https://doi.org/10.5194/gmd-2021-15
https://doi.org/10.5194/gmd-2021-15

Submitted as: model description paper 19 Mar 2021

Submitted as: model description paper | 19 Mar 2021

Review status: this preprint is currently under review for the journal GMD.

B-flood 1.0: an open-source Saint-Venant model for flash flood simulation using adaptive refinement

Geoffroy Kirstetter1, Olivier Delestre1, Pierre-Yves Lagrée2, Stéphane Popinet2, and Christophe Josserand3 Geoffroy Kirstetter et al.
  • 1Laboratoire de Mathématiques J.A. Dieudonné - Polytech Nice-Sophia , Université de Nice - Sophia Antipolis, CNRS, UMR 7351, Parc Valrose, 06108 Nice cedex 02, France
  • 2Sorbonne Université, CNRS, UMR 7190, Institut Jean Le Rond d’Alembert, F-75005 Paris, France
  • 3Laboratoire d’Hydrodynamique (LadHyX), UMR7646 CNRS-Ecole Polytechnique, 91128 Palaiseau CEDEX, France

Abstract. The French Riviera is very often threatened by flash floods. These hydro-meteorological events, which are fast and violent, have catastrophic consequences on life and properties. The development of forecasting tools may help to limit the impacts of these extreme events. Our purpose here is to demonstrate the possibility of using b-flood (a subset of the Basilisk library http://basilisk.fr/) which is a 2D tool based on the shallow water equations and adaptive mesh refinement. The code is first validated on analytical test cases describing different flow regimes. It is then applied on the Toce river valley physical model produced by ENEL-HYDRO in the framework of the CADAM project and on a flash flood case over the urbanized Toce produced during the IMPACT project. Finally, b-flood is applied on the flash flood of October 2015 on Cannes city in south-east France, which demonstrates the feasibility of using a software based on the shallow water equations and mesh refinement for flash flood simulation on small watersheds (less than 100 km2) and on predictive computational time scale.

Geoffroy Kirstetter et al.

Status: open (until 14 May 2021)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on gmd-2021-15', Anonymous Referee #1, 02 Apr 2021 reply
  • CEC1: 'Comment on gmd-2021-15', Juan Antonio Añel, 20 Apr 2021 reply

Geoffroy Kirstetter et al.

Model code and software

B-flood G. Kirstetter, O. Delestre, P.-Y. Lagrée, S. Popinet, and C. Josserand https://doi.org/10.5281/zenodo.4617606

Geoffroy Kirstetter et al.

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Short summary
The development of forecasting tools may help to limit the impacts of flash floods. Our purpose here is to demonstrate the possibility of using B-flood which is a 2D tool based on the shallow water equations and adaptive mesh refinement.