Workshop

ICMS@Strathclyde: Solvers for frequency-domain wave problems and applications

20 - 24 Jun 2022

Enquiries

University of Strathclyde, Glasgow

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Organiser

Victorita Dolean,University of Strathclyde and Université Côte d’Azur

Silvia Gazzola,University of Bath

Ivan Graham,University of Bath

Euan Spence,University of Bath

About

This workshop brought together researchers working on wave problems, specifically:

New discretization methods for frequency-domain wave problems and their analysis.
Fast solvers for linear systems arising from frequency-domain wave problems (formulation, implementation, and analysis).
Applications of the fast solvers (including to inverse problems, geophysical imaging, and electromagnetics).

Programme

Meet the speakers

Monday 20 June

Ivan Graham

University of Bath

Morning Chair

Registration

Welcome

Martin J. Gander

University of Geneva

Schwarz methods by domain truncation

Abstract

Frédéric Nataf

Laboratoire J.L. Lions, Sorbonne Université

A Unified View of Sweeping Algorithms for Helmholtz

Abstract

Refreshments

Abstract

Ivan Graham

University of Bath

Convergence of the Restricted Additive Schwarz method with impedance boundary conditions for the Helmholtz equation.

Abstract

Axel Modave

CNRS - ENSTA Paris

A non-overlapping DDM with PML transmission conditions and checkerboard partitions for Helmholtz problems

Abstract

Lunch/Discussion

Abstract

Victorita Dolean

University of Strathclyde

Afternoon Chair

Abstract

Pierre Jolivet

CNRS

Spectral coarse grids for overlapping Schwarz methods in PETSc

Abstract

Eike Mueller

University of Bath

Multigrid for climate- and weather prediction

Abstract

Refreshments

Abstract

Jemma Shipton

University of Exeter

Towards parallel time stepping schemes for compatible finite element discretisations of the shallow water equations

Abstract

Pierre-Henri Tournier

Sorbonne Université, CNRS, Laboratoire Jacques-Louis Lions

Optimized Schwarz preconditioners for finite difference and finite element acoustic simulations

Abstract

Drinks Reception/Posters

Abstracts

Tuesday 21 June

Martin J. Gander

University of Geneva

Morning Chair

Abstracts

Adrianna Gillman

University of Colorado Boulder

A robust discretization technique for three dimensional Helmholtz problems

Abstract

Alexander Heinlein

Delft University of Technology

A fully algebraic spectral coarse space for overlapping Schwarz methods

Abstract

Leonardo Zepeda-Núñez

Google Research

High-frequency limit of the inverse scattering problem: asymptotic convergence from inverse Helmholtz to inverse Liouville.

Abstract

Refreshments

Abstract

Nicole Spillane

CNRS, Ecole Polytechnique

AWG, an algebraic solver for symmetric positive definite problems

Abstract

Zhiming Chen

Chinese Academy of Sciences

Efficient solvers for high-order explicit and implicit time finite element methods for the wave equation with discontinuous coefficients

Abstract

Lunch/Discussion

Abstract

Christophe Geuzaine

Université de Liège

Afternoon Chair

Abstract

Cornelis Vuik

Delft University of Technology

Scalable solvers for the Helmholtz probem

Abstract

Lehel Banjai

Heriot-Watt University

Fractional wave equation in time and frequency-domain

Abstract

Refreshments

Abstract

Omar Laghrouche & Nawfel Benatia

Heriot-Watt University & Cadi Ayyad University Marrakesh

Frequency domain Bernstein-Bézier finite element solver for modelling short waves - Applications to elastic and Maxwell wave simulations

Abstract

Jet Hoe Tang

ISTerre, Université Grenoble Alpes

Fully Scalable Solver for Frequency-Domain Visco-Elastic Wave Equations in 3D Heterogeneous Media

Abstract

Workshop Dinner

The Citizen

Location

Wednesday 22 June

Cornelis Vuik

Delft University of Technology

Morning Chair

Location

Tristan van Leeuwen

Centrum Wiskunde & Informatica

Large-scale inverse problems with time-harmonic waves

Abstract

Hossein Aghamiry

Geoazur- University of Cote d'azur

LocalizedWavefield Inversion (LWI): an Adaptation of Multi-Block ADMM for Localized FWI

Abstract

Refreshments

Abstract

Shaunagh Downing

University of Bath

Optimising Seismic Imaging via Bilevel Learning

Abstract

Romina Gaburro

University of Limerick

Stability and reconstruction in inverse problems.

Abstract

Lunch/Discussion

Abstract

Optional Excursion to Loch Lomond

Abstract

Thursday 23 June

Frederic Nataf

Laboratoire J.L. Lions, Sorbonne Université

Morning Chair

Abstract

Lise-Marie Imbert-Gerard

University of Arizona

Three types of quasi-Trefftz functions for the 3D convected Helmholtz equation

Abstract

Andrea Moiola

University of Pavia

Stable approximation of Helmholtz solutions by evanescent plane waves

Abstract

Barbara Verfürth

Karlsruhe Institute of Technology

Multiscale method for the nonlinear Helmholtz equation

Abstract

Refreshments

Abstract

Théophile Chaumont-Frelet

Inria

Controllability methods: solving time-harmonic problems iteratively using time-domain solvers

Abstract

Xavier Claeys

Laboratoire Jacques-Louis Lions, Sorbonne Université

Non-local exchange operator for Optimized Schwarz Methods in general non-overlapping subdomain partitions

Abstract

Lunch/Discussion

Abstract

Andrea Moiola

University of Pavia

Afternoon Chair

Abstract

Marcella Bonazzoli

Inria, Institut Polytechnique de Paris

Domain decomposition preconditioners for non-self-adjoint or non-positive-definite problems

Abstract

David Hewett

University College London

Accelerated Calderón preconditioning for Maxwell transmission problems

Abstract

Refreshments

Abstract

Alexandre Kyriakis

University of Strathclyde

Schwarz algorithms for time-harmonic wave problems

Abstract

Hussam Al Daas

STFC, Rutherford Appleton Laboratory

Spectral multilevel algebraic domain decomposition preconditioners

Abstract

Workshop Dinner

The Corinthian Club

Location

Friday 24 June

Pierre Jolivet

CNRS

Morning Chair

Location

Andrew Gibbs

University College London

Fully frequency-independent Hybrid Numerical Asymptotic Boundary Element Methods

Abstract

Niall Bootland

Rutherford Appleton Laboratory

GenEO for frequency-domain wave problems

Abstract

Refreshments

Abstract

Jennifer Pestana

University of Strathclyde

Preconditioned Iterative Methods for Multilevel Toeplitz Matrices

Abstract

Victorita Dolean

University of Strathclyde

Two-level DDM preconditioners for Low Frequency Maxwell equations

Abstract

End of Workshop