Debris Flow Simulation

    Debris flow is a phenomena that high density water with mud and
    big gravel flows down along a stream at high speed.
    Because of its high density and speed, it has huge destruction power.
    Thus damages by debris flows are very severe and sometimes tragic.
    It destroys houses, bridges and claim people's lives.
    Sometimes it flows over even high ridge of mountains.

    Numerical simulation is important for planning efficient counter measure.
    Especially 2D simulation is powerful to evaluate various scenarios and    
    damages in deposition area.

    A 2D debris flow simulation software was developed on FORTRAN
    with support and collaboration from JFEC and Tsukuba University.
    It simulates the movement of debris flow on a digital elevation model (DEM).
    Currently, efforts are being made to apply this simulation in Thailand.

    Collaboration with TITEC has started to simulate more complicated
    phenomena such as flow of trees which stacks up at bridges and expand
    the damages.

    Samples of results are shown below. The DEM extent is 400m * 1,100m.
    Elevation is exaggerated as twice. 6 hours simulation is shown in 90 seconds animation.
    You can view maximum flux ( m2/s ) or movie of flux on interactive 3D. Use a mouse
    wheel to change the size.    

Presentation on Debris Flow Simulation ( PDF )

Max Flux on Interactive   3D DEM ( VRML , 0.1MB, must be quick )
Flux Movie on Interactive 3D DEM ( VRML , 3 MB, pls. be patient to load movie on the DEM )
( To see interactive 3D DEM, install VRML viewer  from Blaxxun Contact , or Cortona3D)

Flux in 2D Movie (Quick Time Movie:4.3MB , AVI(2.6MB: Low Quality) )
                                    (Quick Time Viewer Download)

Acknowledgement: JFEC, Prof. Miyamoto; Tsukuba University