Concept

Géométrie différentielle des surfaces

Publications associées (254)

Power distribution in the snowflake divertor in TCV

Basil Duval, Stefano Coda, Holger Reimerdes, Benoît Labit, Federico Nespoli, Wouter Vijvers

TCV experiments demonstrate the basic power exhaust properties of the snowflake (SF) plus and SF minus divertor configurations by measuring the heat fluxes at each of their four divertor legs. The measurements indicate an enhanced transport into the privat ...

Iop Publishing Ltd2013

Elastomeric substrates with embedded stiff platforms for stretchable electronics

Stéphanie Lacour, Alessia Romeo

Stretchable electronics typically integrate hard, functional materials on soft substrates. Here we report on engineered elastomeric substrates designed to host stretchable circuitry. Regions of a stiff material, patterned using photolithography, are embedd ...

American Institute of Physics2013

Relevance of a complete road surface description in vehicle–bridge interaction dynamics

Pablo Antolin Sanchez

A fully coupled method for reproducing road vehicle-bridge dynamic interaction is presented in which finite element models are used for the structure, multibody dynamics models for the vehicles and interaction is represented by means of a contact with the ...

Elsevier Ltd2013

Model reduction techniques for fast blood flow simulation in parametrized geometries

Alfio Quarteroni, Gianluigi Rozza, Andrea Manzoni

In this paper we propose a new model reduction technique aimed at real-time blood flow simulations on a given family of geometrical shapes of arterial vessels. Our approach is based on the combination of a low-dimensional shape parametrization of the compu ...

2012

Certified Reduced Basis Method for Parametrized Partial Differential Equations: a Combination with ANOVA Expansion

Denis Devaud

In many fields, the computation of an output depending on a field variable is of great interest. If the field variable depends on a high-dimensional parameter, the computational cost involved can be huge. Hence, it is necessary to find efficient and reliab ...

2012

Reduction strategies for shape dependent inverse problems in haemodynamics

Gianluigi Rozza, Andrea Manzoni, Toni Mikael Lassila

This work deals with the development and application of reduction strategies for real-time and many query problems arising in fluid dynamics, such as shape optimization, shape registration (reconstruction), and shape parametrization. The proposed strategy ...

Springer2012

Application of Legendrian Foliations in Differential Flatness Problems

Philippe Müllhaupt, Basile Graf

Instances of control systems are presented for which dynamical feedback linearizability can be assessed from differential forms of highest relative degree after some “contact” transformation has been applied. This bypasses the need to find a polynomial dif ...

2012

Closing Large Hyperbolic 2g-gons

Poincaré's uniformisation theorem says that any Riemann surface is conformally equivalent to a unique (up to isometry) surface of constant Gauss curvature 0, 1 or –1. The (topologically) richest of these three worlds is for curvature –1 formed of hyperboli ...

EPFL2012

On the approximation of stability factors for general parametrized partial differential equations with a two-level affine decomposition

Gianluigi Rozza, Andrea Manzoni, Toni Mikael Lassila

A new approach for computationally efficient estimation of stability factors for parametric partial differential equations is presented. The general parametric bilinear form of the problem is approximated by two affinely parametrized bilinear forms at diff ...

EDP Sciences2012

Multiple-junction photoelectric device and its production process

Christophe Ballif, Matthieu Despeisse, Gaetano Parascandolo, Peter Cuony

The present invention relates to a multiple-junction photoelectric device comprising, in sequence, a substrate (4), a first conducting layer (2), at least two elementary photoelectric devices (6, 10), at least one of said elementary photoelectric devices ( ...

2012

Graph Chatbot

Chattez avec Graph Search

Posez n’importe quelle question sur les cours, conférences, exercices, recherches, actualités, etc. de l’EPFL ou essayez les exemples de questions ci-dessous.

AVERTISSEMENT : Le chatbot Graph n'est pas programmé pour fournir des réponses explicites ou catégoriques à vos questions. Il transforme plutôt vos questions en demandes API qui sont distribuées aux différents services informatiques officiellement administrés par l'EPFL. Son but est uniquement de collecter et de recommander des références pertinentes à des contenus que vous pouvez explorer pour vous aider à répondre à vos questions.

Connectez-vous pour utiliser Chat avec Graph Search