Examples of applications

The present page can give you a good idea of DassFlow's features (below: use of former versions V1.1 and V1.3), even if this page is not up-to-date.
Few other applications have been developped or are under progress by colleagues:
  • flood plain flow (Leze river, France) in collaboration with IMFT,
  • glacier flows (Variagated Alaska, Jakobshavn Groenland, Mertz Antarctica) , lab. LGGE and LEGOS.
  • discharge identification using satelitte data (Garonne river, France) in collaboration with IMFT.

  • Identification of inflow discharges. Pearl River, China.

    Collaboration X. Lai (Niglas, Nanjin, China), J. Monnier.

    • Identification of inflow discharge (at 3 boundaries)
    • Observations :
      • water elevation at 3 gauging stations
      • discharge at 1 gauging station

    pearl river

    Reference :

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    Assimilation of one satellite image. Flood plain, Moselle River, France.

    Collaboration: R. Hostache (PhD Cemagref 03-06), X. Lai (Niglas, China), J. Monnier, C. Puech (D.R. Cemagref Montpellier / Engref).

    • Observations :
      • Partial discharge measurements from the EDF station
      • One satellite image : partial elevation values
    Observations available from the EDF station Water level observations from satellite image
    Observations from the EDF station :
    discharge values
    Reliable elevation values extracted from the satellite image
    Work done by R. Hostache and C. Puech
    • Sensitivities and identification of Manning coefficients
    Different landuses

    Manning coefficients: 10 land-uses

    An video of a direct simulation on the Moselle River is available.

    References :

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    Lagrangian data

    Identification of the topography. Toy test case.

    Collaboration M. Honnorat (PhD'07, Grenoble), J. Monnier, FX Le Dimet (U. Grenoble).

    Configuration :

    • Flow over a bump in a canal
    • First guess : constant topography slope

    Observations :

    • Particle trajectories at surface
    • Elevation at x=15m and x=70m
    lmfa-twin_profil_xz.jpg id_bathy+dof0_h+t_noperturb_topo.jpg
    Topography and reference flow
    Reference and identified topography

    References :

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    Identification of the topography in a canal using a video camera.

    Collaboration: M. Honnorat (PhD'07, Grenoble), J. Monnier, N. Rivière (Insa Lyon), E. Huot (Inria), FX Le Dimet (U. Grenoble).

    • Video from an experiment conducted at the LMFA laboratory (N. Rivière, LMFA Lyon) :
      • flow over a plank in a canal
      • floating particles (confetti) are introduced

    • Particle trajectories are extracted from the video (E. Huot, INRIA Clime Project)
    • Identification of an "equivalent" topography (i.e. real topography + recirculation); identification of an "equivalent" Manning coefficient.
    LMFA Experiment ExperienceLMFA_photo.jpg
    Experiment configuration Image shot from the video: tracers at surface

    References :

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    Joint Assimilation Coupling algorithm: 2D zoom model over 1D global model

    Collaboration: I. Gejadze (U. Strathclyde), J. Marin (engineer), J. Monnier, J.-B. Faure (Cemagref Lyon).


    1D main channel coupled with 2D plain area


    JAC Algorithm performs calibration (data assimilation) and coupling simultaneously.


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    Last modification: 2007-03-09 10:23:49.619580000 +0100