DassFow-Shallow, Variational Data Assimilation for Shallow-Water Models: Numerical Schemes, User and Developer Guides

Frédéric Couderc (1, 2) , Ronan Madec (2) , Jerome Monnier (3, 2) , Jean-Paul Vila (2, 3)

1 CNRS - Centre National de la Recherche Scientifique
2 IMT - Institut de Mathématiques de Toulouse UMR5219
3 INSA - Institut National des Sciences Appliquées

DassFlow is a computational software for free-surface flows including variational data assimilation (4D-VAR), sensitivity analysis, calibration features (adjoint method). The code version "shallow" solves shallow-water like models (Saint-Venant's type). The other version (ALE, not detailed in the present document) includes free-surface Stokes like models (low Reynolds, power-law rheology, ALE surface dynamics). All source files are written in Fortran 2003 / MPI. For more details and references, please consult DassFlow website. In the present manuscript, we describe: the equations, the compilation/execution instructions, the input / output files (user guide), the finite volume schemes, few validation test cases included in the archive, and the code structure (developer guide).

Mots clés: shallow-water; finite volumes; Computational software; adjoint; data assimilation; sensitivities; hydraulics

Domaines: Logiciel mathématique [cs.MS]; Modélisation et simulation; Analyse numérique [cs.NA]; Optimisation et contrôle [math.OC]

Frédéric Couderc, Ronan Madec, Jerome Monnier, Jean-Paul Vila. DassFow-Shallow, Variational Data Assimilation for Shallow-Water Models: Numerical Schemes, User and Developer Guides. [Research Report] University of Toulouse, CNRS, IMT, INSA, ANR. 2013. ⟨hal-01120285⟩