Implementation of lattice Boltzmann free-surface and shallow water models and their two-way coupling

Yann Thorimbert; Bastien Chopard; Jonas Lätt

doi:10.1016/j.mex.2021.101338

Implementation of lattice Boltzmann free-surface and shallow water models and their two-way coupling

MethodsX. 2021 Apr 8:8:101338. doi: 10.1016/j.mex.2021.101338. eCollection 2021.

Authors

Yann Thorimbert¹, Bastien Chopard¹, Jonas Lätt¹

Affiliation

¹ Department of Computer Science, University of Geneva, Carouge 1227, Switzerland.

Abstract

•A detailed, practical description of a 2D lattice Boltzmann (LB) free-surface model and its coupling with a 1D LB shallow water model is provided.•A Python code is provided, that implements the Gaussian droplet benchmark of the research article (Thorimbert et al., 2019) corresponding to this method article.•Particular attention is given to the details of the free-surface implementation which, in the literature, vary among authors. These ambiguities must be addressed in order to build a reproducible scheme, as well as the exact implementation and parameters of the coupling model proposed in the associated research article.