Publication
Why don't avalanche-dynamics models of higher complexity necessarily lead to better predictions?
Publications associées (50)
Numerical simulation of immiscible incompressible viscous, viscoelastic and elastic multiphase flows
A unified numerical framework is presented for the modelling of multiphasic viscoelasticand elastic flows. The rheologies considered range from incompressible Newtonian orOldroyd-B viscoelastic fluids to Neo-Hookean elastic solids. The model is formulatedi ...
EPFL2023A Downscaling Intercomparison Study: The Representation of Slope- and Ridge-Scale Processes in Models of Different Complexity
Varun Sharma, Franziska Gerber, Dylan Stewart Reynolds
Spatially distributed meteorological information at the slope scale is relevant for many processes in complex terrain, yet information at this sub-km spatial resolution is difficult to obtain. While downscaling to kilometer resolutions is well described in ...
FRONTIERS MEDIA SA2022Quantifying the transition of impact mechanisms of geophysical flows against flexible barrier
Flexible barriers have been increasingly used worldwide for mitigating natural hazards involving various geophysical flows. The analysis and design of flexible barriers need to distinguish two major impact mechanisms, runup and pile-up, which remain poorly ...
ELSEVIER2021A plane‐strain hydraulic fracture driven by a shear‐thinning Carreau fluid
Brice Tanguy Alphonse Lecampion, Lucas Pereira
We study the propagation of a plane‐strain hydraulic fracture driven by a shear thinning fluid following a Carreau rheology. We restrict to the impermeable medium case and quantify in details the impact on fracture growth of the shear‐thinning properties o ...
2021Propagation of fluid driven fractures in transversely isotropic material
The propagation of fluid driven fractures is used in a number of industrial applications (well stimulation of unconventional reservoirs, development of deep geothermal systems) but also occurs naturally (magmatic dyke intrusion). While the mechanics of hyd ...
EPFL2020Modeling snow and avalanches with the Material Point Method and finite strain elastoplasticity
Johan Alexandre Philippe Gaume, Lars Kristoffer Uhlen Blatny, Xingyue Li, Bertil Trottet
Snow is a complex and fascinating material which can sustain stresses like a solid or flow like a fluid depending upon the load it is subjected to. The transition from solid to fluid state can lead to catastrophic snow slab avalanches. Modeling large defor ...
The Alliance of Laboratories in Europe for Education, Research and Technology2020Comparing spatio-temporal networks of intermittent avalanche events: Experiment, model, and empirical data
Relaxational processes in many complex systems often occur in the form of avalanches resulting from internal cascades from across the system scale. Here, we probe the space, time, and magnitude signatures of avalanching behavior using a network of temporal ...
2020Gel-Based Soft Interfaces for Fastener Manipulation in Robotic Agile Assembly
Josephine Anna Eleanor Hughes, Kieran Daniel Gilday
Robotic manufacturing is increasingly moving towards one-off assembly tasks. Agile manufacturing systems must be able to adapt to changing parts and designs. The addition of a soft interface, between a picking tool and a part, can improve the performance a ...
Institute of Electrical and Electronics Engineers Inc.2019Modeling Solid-fluid Transitions in Snow Avalanches Using the Material Point Method
Johan Alexandre Philippe Gaume, Alec van Herwijnen
Snowslab avalanches start with the failure of a weak snow layer buried below a cohesive snow slab. After failure,the very porous character of the weak layer leads toits volumetric collapse and thus closing of crack facesdue to the weight of the overlaying ...
2019Conservative Model Order Reduction for Fluid Flow
Qian Wang, Jan Sickmann Hesthaven, Nicolò Ripamonti, Babak Maboudi Afkham
In the past decade, model order reduction (MOR) has been successful in reducing the computational complexity of elliptic and parabolic systems of partial differential equations (PDEs). However, MOR of hyperbolic equations remains a challenge. Symmetries an ...
Springer Verlag2018