La Houille Blanche
Number 3, Avril 1994
|Page(s)||50 - 56|
|Published online||01 October 2009|
Modélisation numérique des écoulements de laves torrentielles
Numerical modelling of debris flow dynamics
CEMAGREF - GRENOBLE Division Protection Contre les Erosions 2, rue de la papeterie BP.76, 38402 Saint-Martin-d'Hères CEDEX
In order to predict complex transient debris flows we developed a numerical model based on shallow-water-equations. We consider only muddy debris flows whose simple shear behaviour is well represented by a Herschel-Bulkley model. In laminar regime, the wall friction force is assumed to be equal to the resistance of a steady uniform flow having same depth and mean velocity. The model parameters, deduced from the fluid behaviour, are estimated independently by rheometrical measurements. The main characteristics of our experimental transient flows, established in a laboratory flume, are in fairly good agreement with the numerical model predictions without any additional fitting.
© Société Hydrotechnique de France, 1994
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.