Nos chercheuses et chercheurs

Stéphanie Chaillat-Loseille

Unité de Mathématiques Appliquées (UMA)

CNRS Research Scientist

HDR

I am CNRS research scientist in the lab POEMS. I participate to the animation of the GDR Ondes within the modelisation and simulation thematic group (https://gdr-ondes.cnrs.fr/groupes-thematiques/gt1-modelisation-et-simulation/)

I am also member of the Academic Council of Institut Polytechnique de Paris and in charge of the parity, diversity and equal opportunities committee.

Activités de recherche et de formation

My research concerns the proposition and study of fast algorithms and numerical methods to simulate wave propagation problems in large scale domains, e.g., acoustic wave propagation or seismic wave propagation. My research is always driven by realistic physical problems. My expertise concerns numerical methods for PDEs, fast algorithms and efficient (including parallel) programming. The originality of my research is to develop and improve the boundary element method for mechanical problems: simulation of seismic waves in the soil, underwater explosions in the ocean, contact problems, radiated noise in different configurations ... All my research work is integrated in the fast solver COFFEE (https://uma.ensta-paris.fr/soft/COFFEE/) that I distribute within the framework of collaborations

In addition to my research activites, I participate to the teachings at ENSTA ParisTech.

Nos chercheuses et chercheurs

Stéphanie Chaillat-Loseille

Activités de recherche et de formation

Publications HAL

Solvability results for the transient acoustic scattering by an elastic obstacle

A high-order discontinuous Galerkin Method using a mixture of Gauss-Legendre and Gauss-Lobatto quadratures for improved efficiency

Convergence d'un couplage élastique-acoustique FEM-BEM itératif, global en temps

Méthode des éléments de frontière pour la mécanique des failles et le contrôle sismique

Improvement of hierarchical matrices for 3D elastodynamic problems with a complex wavenumber

Efficient evaluation of three-dimensional Helmholtz Green's functions tailored to arbitrary rigid geometries for flow noise simulations

Analytical preconditioners for Neumann elastodynamic Boundary Element Methods

A fast boundary element based solver for localized inelastic deformations

A fast boundary element based solver for localized inelastic deformations

On the efficiency of nested GMRES preconditioners for 3D acoustic and elastodynamic H-matrix accelerated Boundary Element Methods

A fast boundary element method using the Z-transform and high-frequency approximations for large-scale 3D transient wave problems

Contributions to the modelling of acoustic and elastic wave propagation in large-scale domains with boundary element methods

An efficient preconditioner for adaptive Fast Multipole accelerated Boundary Element Methods to model time-harmonic 3D wave propagation

Metric-based anisotropic mesh adaptation for 3D acoustic boundary element methods

Theory and implementation of $\mathcal{H}$-matrix based iterative and direct solvers for Helmholtz and elastodynamic oscillatory kernels

Calcul des opérateurs d'impédance en Interaction Sol-Structure: méthode éléments de frontière accélérée par méthode multipôle rapide

3D metric-based anisotropic mesh adaptation for the fast multipole accelerated boundary element method in acoustics

Fast iterative boundary element methods for high-frequency scattering problems in 3D elastodynamics

Seismic Wave Amplification in 3D Alluvial Basins: Aggravation factors from Fast Multipole BEM Simulations

Seismic Wave Amplification in 3D Alluvial Basins: 3D/1D Amplification Ratios from Fast Multipole BEM Simulations

Approximate local Dirichlet-to-Neumann map for three-dimensional time-harmonic elastic waves

A Wideband Fast Multipole Method for the Helmholtz Kernel: Theoretical Developments

A Wideband Fast Multipole Method for the Helmholtz kernel: Theoretical developments

A new Fast Multipole formulation for the elastodynamic half-space Green's tensor

Recent advances on the fast multipole accelerated boundary element method for 3D time-harmonic elastodynamics

Seismic elastic modeling for seismic imaging

FaIMS: A fast algorithm for the inverse medium problem with multiple frequencies and multiple sources for the scalar Helmholtz equation

A preconditioned 3-D multi-region fast multipole solver for seismic wave propagation in complex geometries

Application of the multi-level time-harmonic fast multipole BEM to 3-D visco-elastodynamics

Algorithme rapide et adaptatif pour le problème inverse de milieu en élastodynamique 3-D, avec fréquences et sources multiples

Méthode multipôle rapide multi-niveaux en visco-élastodynamique 3D

Fast multipole method for boundary integral equations in 3D elastodynamics : Application to seismic wave propagation

A New Formulation of Dynamic Problems in Zener Type Viscoelasticity

Identification of a planar crack in Zener type viscoelasticity

Multi-level fast multipole bem for the complex-wavenumber formulation of 3-d viscoelastodynamics

Fast Multipole accelerated boundary element method for elastic wave propagation in multi-region domains

Méthode multipôle rapide pour les équations intégrales de frontière en élastodynamique 3D. Application à la propagation d’ondes sismiques

Multi-level fast multipole BEM for 3-D elastodynamics

On a nonlinear inverse problem in viscoelasticity

On a nonlinear inverse problem in viscoelasticity

Fast Multipole Method for 3-D elastodynamic boundary integral equations. Application to seismic wave propagation

A fast multipole accelerated BEM for 3-D elastic wave computation

A multi-level fast multipole BEM for 3-D elastodynamics in the frequency domain

A multi-level fast-multipole multi-region method for 3-D elastodynamics in the frequency domain

A multi-level fast-multipole multi-region method for 3-D frequency-domain elastodynamics

Diffraction of Seismic Waves from 3D Canyons and Alluvial Basins Modeled using the Fast Multipole-Accelerated BEM

Multi-level fast multipole multi-region method for 3D seismic response of alluvial basins

Diffraction of seismic waves from 3D canyons and alluvial basins modelled using the Fast Multipole-accelerated BEM

Accélération des calculs de propagation d'ondes élastiques par la Méthode multipôle rapide (formulation par équations intégrales de frontière)

Modélisation de la propagation d'ondes sismiques en 3D par la "méthode multipôle rapide

Modélisation des effets de site tridimensionnels par la « Méthode Multipôle Rapide »

Modélisation des effets de site tridimensionnels par la « Méthode Multipôle Rapide »

A new fast BEM approach to model site effects in alluvial basins

Méthode multipôle rapide pour les éléments de frontière en élastodynamique tridimensionnelle : Application à la propagation d'ondes sismiques

Fast multipole method formulation for 3D elastodynamics in the frequency domain

A Fast Multipole Method formulation for 3D elastodynamics in the frequency domain

A fast multipole accelerated BEM for 3-D seismic wave computation

Accélération des calculs de propagation d'ondes élastiques par la Méthode multipôle rapide (formulation par équations intégrales de frontière)

Fast multipole boundary integral equation method for 3D seismic wave propagation in alluvial basins

Resolution of linear viscoelastic equations in the frequency domain using real Helmholtz boundary integral equations

Resolution of linear viscoelastic equations in the frequency domain using real Helmholtz boundary integral equations

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