Articles | Volume 14, issue 6
Geosci. Model Dev., 14, 3577–3602, 2021
https://doi.org/10.5194/gmd-14-3577-2021
Geosci. Model Dev., 14, 3577–3602, 2021
https://doi.org/10.5194/gmd-14-3577-2021
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.

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Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by James Shaw on behalf of the Authors (04 Apr 2021)  Author's response    Author's tracked changes    Manuscript
ED: Reconsider after major revisions (21 Apr 2021) by Bethanna Jackson
ED: Referee Nomination & Report Request started (25 Apr 2021) by Bethanna Jackson
RR by Anonymous Referee #1 (04 May 2021)
ED: Publish as is (05 May 2021) by Bethanna Jackson
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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.