LISFLOOD-FP 8.0: the new discontinuous Galerkin shallow-water solver for multi-core CPUs and GPUs

Shaw, James; Kesserwani, Georges; Neal, Jeffrey; Bates, Paul; Sharifian, Mohammad Kazem

doi:https://doi.org/10.5194/gmd-14-3577-2021

Articles | Volume 14, issue 6

Geosci. Model Dev., 14, 3577–3602, 2021

https://doi.org/10.5194/gmd-14-3577-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Geosci. Model Dev., 14, 3577–3602, 2021

https://doi.org/10.5194/gmd-14-3577-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 14, issue 6

Development and technical paper

11 Jun 2021

Development and technical paper | 11 Jun 2021

LISFLOOD-FP 8.0: the new discontinuous Galerkin shallow-water solver for multi-core CPUs and GPUs

James Shaw et al.

Data sets

LISFLOOD-FP 8.0 simulation results James Shaw, Georges Kesserwani, Jeffrey Neal, Paul Bates, and Mohammad Kazem Sharifian https://doi.org/10.5281/zenodo.4066823

Model code and software

LISFLOOD-FP 8.0 hydrodynamic model LISFLOOD developers https://doi.org/10.5281/zenodo.4073010

Short summary

LISFLOOD-FP has been extended with new shallow-water solvers – DG2 and FV1 – for modelling all types of slow- or fast-moving waves over any smooth or rough surface. Using GPU parallelisation, FV1 is faster than the simpler ACC solver on grids with millions of elements. The DG2 solver is notably effective on coarse grids where river channels are hard to capture, improving predicted river levels and flood water depths. This marks a new step towards real-world DG2 flood inundation modelling.