Publications by Emmanuel Leriche

Large eddy simulation of particulate flow inside a differentially heated cavity

Emmanuel Leriche, Michel Deville, Christoph Bosshard, Alfredo Soldati, Abdelouahab Dehbi

In nuclear safety, some severe accident scenarios lead to the presence of fission products in aerosol form in the closed containment atmosphere. It is important to understand the particle depletion process to estimate the risk of a release of radioactivity ...

Elsevier2014

Large eddy simulation of the differentially heated cubic cavity flow by the spectral element method

Emmanuel Leriche, Michel Deville, Riccardo Puragliesi, Christoph Bosshard, Alfredo Soldati, Abdelouahab Dehbi

Large eddy simulations of the turbulent natural convection flow in a differentially heated cavity have been carried out at a Rayleigh number of 10(9) using the spectral element method. To obtain the large eddy simulation equations, a low pass filter given ...

Pergamon-Elsevier Science Ltd2013

DNS of buoyancy-driven flows and Lagrangian particle tracking in a square cavity at high Rayleigh numbers

Emmanuel Leriche, Michel Deville, Riccardo Puragliesi, Alfredo Soldati, Abdelouahab Dehbi

In this work we investigate numerically particle deposition in the buoyancy driven flow of the differentially heated cavity (DHC). We consider two values of the Rayleigh number (Ra = 10(9), 10(10)) and three values of the particle diameter (d(p) = 15, 25, ...

2011

Vector potential–vorticity relationship for the Stokes flows: application to the Stokes eigenmodes in 2D/3D closed domain

Emmanuel Leriche

The unsteady dynamics of the Stokes flows, where ∇⃗ 2(𝑝𝜌)=0, is shown to verify the vector potential–vorticity ( 𝜓⃗ ,𝜔⃗ ) correlation ∂𝜓⃗ ∂𝑡+𝜈𝜔⃗ +Π⃗ =0, where the field Π⃗ is the pressure-gradient vector potential defined by ∇⃗ (𝑝𝜌)=∇⃗ ×Π⃗ . This correlati ...

Springer, Springer-Verlag2007

A coupled approximate deconvolution and dynamic mixed scale model for large-eddy simulation

Emmanuel Leriche, Michel Deville, Marc Anthony David Habisreutinger, Roland Bouffanais

2007

Stokes eigenmodes in cubic domain: primitive variable and Lattice Boltzmann formulations

Emmanuel Leriche

2007

Large-eddy simulation of the flow in a lid-driven cubical cavity

Emmanuel Leriche, Michel Deville, Roland Bouffanais

2007

Numerical Evaluation of the Accuracy and Stability Properties of High-order Direct Stokes Solvers with or without Temporal Splitting

Emmanuel Leriche, Michel Deville

The temporal stability and effective order of two different direct high-order Stokes solvers are examined. Both solvers start from the primitive variables formulation of the Stokes problem, but are distinct by the numerical uncoupling they apply on the Sto ...

Springer, Kluwer Academic Publishers-Plenum Publishers2006

Direct Numerical Simulation in a Lid-Driven Cubical Cavity at High Reynolds Number by a Chebyshev Spectral Method

Emmanuel Leriche

Direct numerical simulation of the flow in a lid-driven cubicalcavity has been carried out at high Reynolds numbers (based on the maximum velocity on the lid), between 12'000 and 22'000. An efficient Chebyshev spectral method has been implemented for the s ...

Springer, Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com2006

Large-eddy simulation of the lid-driven cubic cavity flow by the spectral element method

Emmanuel Leriche, Michel Deville, Daniel Weill, Roland Bouffanais

This paper presents the large-eddy simulation of the lid-driven cubic cavity flow by the spectral element method (SEM) using the dynamic model. Two spectral filtering techniques suitable for these simulations have been implemented. Numerical results for Re ...

Kluwer Academic Publishers, Springer2006

Can a Helmholtz solver run on a cluster?

Emmanuel Leriche, Marc Anthony David Habisreutinger, Vincent Keller

Our vectorized Helmholtz solver runs at 85% efficiency on a NEC SX-5. The most time-consuming parts have been ported on SMP, NUMA, and cluster architectures. It is shown that an OpenMP version can deliver similar performance when running it on a 16 process ...

IEEE2006

Fundamental Stokes eigenmodes in the square: which expansion is more accurate, Chebyshev or Reid-Harris?

Emmanuel Leriche

The well known Reid-Harris expansions, applied to the stream function formulation, and the Projection-Diffusion Chebyshev Stokes solver, in primitive variables, are used to compute the fundamental Stokes eigenmodes of each of the symmetry families characte ...

Springer, Springer US2005

Direct numerical simulation of a lid-driven cavity flow by a Chebyshev spectral method

Emmanuel Leriche

EPFL1999