Publications related to Forward and backward waves in the arterial system: nonlinear separation using Riemann invariants

Moving mesh method for direct numerical simulation of two-phase flow with phase change

John Richard Thome, Gustavo Rabello Dos Anjos, Erik Gros

A moving mesh approach is employed to simulate two-phase flow with phase change. The mathematical model is based on the Arbitrary Lagrangian-Eulerian (ALE) description of the axisymmetric Navier-Stokes equations and energy conservation. These equations are ...

ELSEVIER SCIENCE INC2018

A semi-Lagrangian splitting method for the numerical simulation of sediment transport with free surface flows

Marco Picasso, Alexandre Caboussat, Gilles Steiner, Arwa Mrad

We present a numerical model for the simulation of 3D poly-dispersed sediment transport in a Newtonian flow with free surfaces. The physical model is based on a mixture model for multiphase flows. The Navier-Stokes equations are coupled with the transport ...

PERGAMON-ELSEVIER SCIENCE LTD2018

Multi space reduced basis preconditioners for parametrized partial differential equations

Niccolò Dal Santo

The multiquery solution of parametric partial differential equations (PDEs), that is, PDEs depending on a vector of parameters, is computationally challenging and appears in several engineering contexts, such as PDE-constrained optimization, uncertainty qu ...

EPFL2018

Basal entrainment by Newtonian gravity-driven flows

Christophe Ancey, Nicolas Andreini, Belinda Margaret Bates

Gravity-driven flows can erode the bed along which they descend and increase their mass by a factor of 10 or more. This process is called basal entrainment. Although documented by field observations and laboratory experiments, it remains poorly understood. ...

2016

Is the lattice Boltzmann method suited for aeroacoustic applications ?

Lionel Wilhelm

Lattice Boltzmann method has become a common tool for computational fluid dynamics. Thanks to the weak numerical dissipation of the numerical scheme, it seems very well fitted for aeroacoustics studies. However there exists only few validations in literatu ...

2015

Linearized numerical homogenization method for nonlinear monotone parabolic multiscale problems

Assyr Abdulle, Gilles Vilmart, Martin Ernst Huber

We introduce and analyze an efficient numerical homogenization method for a class of nonlinear parabolic problems of monotone type in highly oscillatory media. The new scheme avoids costly Newton iterations and is linear at both the macroscopic and the mic ...

Siam Publications2015

On global regularity for systems of nonlinear wave equations with the null-condition

Joachim Krieger, Aparajita Dasgupta, Can Gao

In this note we combine a recent result by Geba [2] on the local wellposedness theory of systems of nonlinear wave equations with

Q_0

null-form structure with the classical Penrose compactification method to obtain a new small data global existence resul ...

International Press2015

Flow simulation of a Pelton bucket using finite volume particle method

François Avellan, Ebrahim Jahanbakhsh, Christian Vessaz

The objective of the present paper is to perform an accurate numerical simulation of the high-speed water jet impinging on a Pelton bucket. To reach this goal, the Finite Volume Particle Method (FVPM) is used to discretize the governing equations. FVPM is ...

International Association For Hydraulic Research2014

Finite element heterogeneous multiscale method for the wave equation: long-time effects

Assyr Abdulle

A new finite element heterogeneous multiscale method (FE-HMM) is proposed for the numerical solution of the wave equation over long times in a rapidly varying medium. Our new FE-HMM-L method captures not only the short-time behavior of the wave field, well ...

Siam Publications2014

3D ALE Finite-Element Method for Two-Phase Flows With Phase Change

John Richard Thome, Navid Borhani, Gustavo Rabello Dos Anjos

We seek to study numerically two-phase flow phenomena with phase change through the finite-element method (FEM) and the arbitrary Lagrangian-Eulerian (ALE) framework. This method is based on the so-called one-fluid formulation; thus, only one set of equati ...

Taylor & Francis2014

Forward and backward waves in the arterial system: nonlinear separation using Riemann invariants

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Moving mesh method for direct numerical simulation of two-phase flow with phase change

A semi-Lagrangian splitting method for the numerical simulation of sediment transport with free surface flows

Multi space reduced basis preconditioners for parametrized partial differential equations

Basal entrainment by Newtonian gravity-driven flows

Is the lattice Boltzmann method suited for aeroacoustic applications ?

Linearized numerical homogenization method for nonlinear monotone parabolic multiscale problems

On global regularity for systems of nonlinear wave equations with the null-condition

Flow simulation of a Pelton bucket using finite volume particle method

Finite element heterogeneous multiscale method for the wave equation: long-time effects

3D ALE Finite-Element Method for Two-Phase Flows With Phase Change

Moving mesh method for direct numerical simulation of two-phase flow with phase change

Is the lattice Boltzmann method suited for aeroacoustic applications ?

Multi space reduced basis preconditioners for parametrized partial differential equations

A semi-Lagrangian splitting method for the numerical simulation of sediment transport with free surface flows

Basal entrainment by Newtonian gravity-driven flows

Finite element heterogeneous multiscale method for the wave equation: long-time effects

3D ALE Finite-Element Method for Two-Phase Flows With Phase Change

Linearized numerical homogenization method for nonlinear monotone parabolic multiscale problems

On global regularity for systems of nonlinear wave equations with the null-condition

Flow simulation of a Pelton bucket using finite volume particle method