DassFlow v1.0: a variational data assimilation software for river flows
type: Dataset
description: Dassflow is a computational software for river hydraulics (floods), especially designed for variational data assimilation. The forward model is based on the bidimensional shallow-water equations, solved by a finite volume method (HLLC approximate Riemann solver). It is written in Fortran 95. The adjoint code is generated by the automatic differentiation tool Tapenade. Thus, Dassflow software includes the forward solver, its adjoint code, the full optimization framework (based on the M1QN3 minimization routine) and benchmarks. The generation of new data assimilation twin experiments is easy. The software is interfaced with few pre and post-processors (mesh generators, GIS tools and visualization tools), which allows to treat real data.
identifier: Report N°: RR-6150
issued: 2026-05-08T03:22:00.660686
language: en
modified: 2026-05-08T03:22:00.660693
contact point: Organization
  fn: CCSD
keyword: flood
keyword: infoeu-reposemanticsreport
keyword: infoinfo-mocomputer-science-csmodeling-and-simulation
keyword: infoinfo-mscomputer-science-csmathematical-software-csms
keyword: mathmath-ocmathematics-mathoptimization-and-control-mathoc
keyword: parameter-identification
keyword: reports
keyword: river-hydraulics
keyword: variational-data-assimilation
landing page: https://hal.science/hal-00908169

DassFlow v1.0: a variational data assimilation software for river flows
type: Distribution
format: HTML
issued: 2026-05-08T03:22:00.674152
modified: 2026-05-08T03:22:00.644471
access URL: https://hal.science/hal-00908169

test_moissonnage_selune
type: Agent