RT Journal Article
T1 Simulación física y numérica de las avalanchas de nieve en Francia
T1 Dense and powder avalanches modelling in France
A1 Naaim, M.
A1 Martínez, H.
AB In this paper are presented and described the main characteristics of the different kind of snow avalanches. We distinguishes two great families : dense and powder avalanches. Their releasing conditions are reminded and their dynamics and effects are described. A modelling based on Saint Venant equations (completed by a Bingham reological model) is proposed for the dense avalanches. Concerning powder avalanches their similarity with gravity currents allows to undertake a physical modelling. This physical modelling is succinctly described and the densimetric Froude similarity critérium is presented. The numerical modelling of this kind of avalanches (based on Navier-Stokes equations and on a turbulence model) is shown . The comparison between the two models is made in the case of aturbidity current.The numerical modelling allows to find global characteristics of the flow (such height and velocity of the avalanche front) and allows especially to access to the internal variables (pressure, concentration, velocity and turbulence characteristics)
PB Sociedad Geológica de España
YR 1996
FD 1996
LK http://hdl.handle.net/10272/12918
UL http://hdl.handle.net/10272/12918
LA spa
DS Repositorio Institucional de la Universidad de Huelva
RD 30 may 2026