On a 2D 'zoom' for the 1D shallow water model: coupling and data assimilation

I.Y. Gejadze, J. Monnier

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)


In the context of river hydraulics we elaborate the idea of a 'zoom' model locally superposed on an open-channel network global model. The zoom model (2D shallow water equations) describes additional physical phenomena, which are not represented by the global model (1D shallow water equations with storage areas). Both models are coupled using the optimal control approach when the zoom model is used to assimilate local observations into the global model (variational data assimilation) by playing the part of a mapping operator. The global model benefits from using zooms, while no substantial modification to it is required. Numerical results on a toy test case show the feasibility of the suggested method.
Original languageEnglish
Pages (from-to)4628-4643
Number of pages15
JournalComputer Methods in Applied Mechanics end Engineering
Issue number45-48
Publication statusPublished - 2007


  • zoom model
  • coupling
  • optimal control
  • variational data assimilation
  • shallow water equations
  • flood modelling


Dive into the research topics of 'On a 2D 'zoom' for the 1D shallow water model: coupling and data assimilation'. Together they form a unique fingerprint.

Cite this