Publications de Martin Rentschler

Hydrodynamic Instabilities in Well-Balanced Finite Volume Schemes for Frictional Shallow Water Equations. The Kinematic Wave Case

We report the developments of hydrodynamic instabilities in several well-balanced finite volume schemes that are observed during the computation of the temporal evolution of an out-balance flow which is essentially a kinematic wave. The numerical simulatio ...

Springer Verlag2011

Simulating Viscoplastic Avalanches

Martin Rentschler

This is a numerical investigation of a yield-stress fluid flowing down an inclined plane. A three-dimensional, free-surface, two-phase incompressible Navier-Stokes solver is extended to handle generalized Newtonian fluids. Special attention is spent on the ...

EPFL2010

Improved SPH methods for simulating free surface flows of viscous fluids

Aurèle Parriaux, Jiannong Fang, Christophe Ancey, Martin Rentschler

2009

Avalanches of concentrated granular suspensions down on inclined plane

Sébastien Wiederseiner, Nicolas Andreini, Christophe Ancey, Martin Rentschler

2008

Rheophysical Investigation in Concentrated Particle Suspensions

Sébastien Wiederseiner, Nicolas Andreini, Christophe Ancey, Martin Rentschler

The Society of Rheology2008

An exact solution for ideal dam-break floods on steep slopes

Christophe Ancey, Martin Rentschler

Dam-break floods on steep slopes occur in diverse settings. They may result from failure of either natural or man-made dams, and they have been responsible for the loss of thousands of lives [Costa, 1988]. Recent disasters resulting from dam-break floods o ...

American Geophysical Union2008

Existence and features of similarity solutions for non-Boussinesq gravity currents

Steve Cochard, Sébastien Wiederseiner, Christophe Ancey, Martin Rentschler

In this paper, the flow dynamics of gravity currents on a horizontal plane is investigated from a theoretical point of view by seeking similarity solutions. The current is generated by unleashing a varying volume of heavy fluid within an ambient fluid of m ...

2007

Front dynamics of a water surge at high Reynolds number: Similarity solutions to the Saint-Venant equations

Steve Cochard, Sébastien Wiederseiner, Christophe Ancey, Martin Rentschler

2006

Front dynamics of supercritical non-Boussinesq gravity currents

Steve Cochard, Sébastien Wiederseiner, Christophe Ancey, Martin Rentschler

In this paper, we seek similarity solutions to the shallow water (Saint-Venant) equations for describing the motion of a non-Boussinesq, gravity-driven current in an inertial regime. The current is supplied in fluid by a source placed at the inlet of a hor ...

American Geophysical Union2006