UNIGE document Scientific Article
previous document  unige:121412  next document
add to browser collection
Title

Coupling of lattice Boltzmann shallow water model with lattice Boltzmann free-surface model

Authors
Published in Journal of computational science. 2019, vol. 33, p. 1-10
Abstract We present a scheme for coupling a 2D lattice Boltzmann free-surface solver with a 1D lattice Boltzmann shallow water solver, allowing to save computational effort and efficiently realize multiscale systems. The accuracy of the coupling is validated with two tests. First, we compare the numerical and analytical solutions in a setup with fixed inflow current and outflow water level in a canal. Secondly, the physics of wave propagation and reflection in a domain is investigated in a coupled simulation, and compared to the solutions obtained in both a pure free-surface and a pure shallow-water simulation. Finally, a performance test is carried out to demonstrate that the overhead of the coupling is negligible. A quantitative validation of this type of coupling for the lattice Boltzmann method is novel, and opens the door to a range of large-scale simulations of canals and other hydrodynamic systems.
Keywords Lattice BoltzmannFree-surfaceShallow waterTwo-phase flowsValidation
Identifiers
Full text
Structures
Research group Scientific and Parallel Computing
Citation
(ISO format)
THORIMBERT, Yann, LATT, Jonas, CHOPARD, Bastien. Coupling of lattice Boltzmann shallow water model with lattice Boltzmann free-surface model. In: Journal of Computational Science, 2019, vol. 33, p. 1-10. doi: 10.1016/j.jocs.2019.01.006 https://archive-ouverte.unige.ch/unige:121412

318 hits

1 download

Update

Deposited on : 2019-07-30

Export document
Format :
Citation style :