Laboratoire de Mécanique des Fluides et d’Acoustique - UMR 5509

Article dans Int. J. High Perform. Comput. Appl. (2017)

In situ analysis and visualization of massively parallel computations

Anne Cadiou, Marc Buffat, Bastien Di Pierro, Lionel Le Penven, Christophe Pera

Massively parallel simulations generate increasing volumes of big data, whose exploitation requires increasingly large storage resources, efficient networking technologies and post-processing (...)

Article dans J. Crystal Growth (2017)

On the eﬀect of thermodiﬀusion on solute segregation during the growth of semiconductor materials by the vertical Bridgman method

Mokhtar Ben Sassi, Slim Kaddeche, Marcello Lappa, Séverine Millet, Daniel Henry, Hamda Ben Hadid

The effect of thermodiffusion on dopant distribution in the melt and in the grown crystal is investigated numerically for a vertical Bridgman configuration for situations of pure thermal (...)

Article dans Comput. Fluids (2017)

Mixing in modulated turbulence. Analytical results

Wouter J.T. Bos, Robert Rubinstein

Recent numerical results show that if a scalar is mixed by periodically forced turbulence, the average mixing rate is directly affected for forcing frequencies small compared to the integral (...)

Article dans J. Fluid Mech. (2017)

A statistical mechanics approach to mixing in stratified fluids

A. Venaille, L. Gostiaux and J. Sommeria

Predicting how much mixing occurs when a given amount of energy is injected into a Boussinesq fluid is a long-standing problem in stratified turbulence. The huge number of degrees of freedom (...)

Article dans C. R. Méc. (2017)

Invariant solutions in a channel flow using a minimal restricted nonlinear model

Frédéric Alizard

Simulations using a Restricted Nonlinear (RNL) system, where mean flow distortion resulting from Reynolds stress feedback regenerates rolls, is applied in a channel flow under subcritical (...)

Article dans Comput. Fluids (2017)

Anisotropic triadic closures for shear-driven and buoyancy-driven turbulent flows

Claude Cambon, Vincent Mons, Benoît-Joseph Gréa, Robert Rubinstein

We show how two-point turbulence models based on triadic closures, initially developed for homogeneous isotropic turbulence, can be applied to anisotropic turbulent flows. Efficient numerical (...)

Article dans Chin. J. Aeronauti. (2017)

Parameter study on numerical simulation of corner separation in LMFA-NACA65 linear compressor cascade

Gao Feng, Ma Wei, Sun Jinjing, Jérôme Boudet, Xavier Ottavy, Liu Yangwei, Lu Lipeng, Shao Liang

Large-eddy simulation (LES) is compared with experiment and Reynolds-averaged Navier-Stokes (RANS), and LES is shown to be superior to RANS in reproducing corner separation in the LMFA-NACA65 (...)

Article dans Wave Motion (2017)

Weakly nonlinear propagation of small-wavelength, impulsive acoustic waves in a general atmosphere

J.F. Scott, P. Blanc-Benon, O. Gainville

Multiple-scale asymptotic analysis is applied to small-wavelength, weakly nonlinear propagation of an impulsive acoustic wave in a general (3D, in-motion and time dependent) atmosphere. In (...)

Article dans Phys. Rev. Fluids (2017)

Interaction between a large buoyant bubble and turbulence

Aurore Loisy and Aurore Naso

The free rise of isolated, deformable, finite-size bubbles in otherwise homogeneous isotropic turbulence is investigated by direct numerical simulation. The Navier-Stokes equations are solved in (...)

Article dans J. Fluid Mech. (2017)

Linear and nonlinear dynamics of pulsatile channel flow

Benoît Pier and Peter J. Schmid

The dynamics of small-amplitude perturbations, as well as the regime of fully developed nonlinear propagating waves, is investigated for pulsatile channel flows. The time-periodic base flows are (...)

Laboratoire de Mécanique des Fluides et d’Acoustique - UMR 5509

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Publications T&I 2017

In situ analysis and visualization of massively parallel computations

On the eﬀect of thermodiﬀusion on solute segregation during the growth of semiconductor materials by the vertical Bridgman method

Mixing in modulated turbulence. Analytical results

A statistical mechanics approach to mixing in stratified fluids

Invariant solutions in a channel flow using a minimal restricted nonlinear model

Anisotropic triadic closures for shear-driven and buoyancy-driven turbulent flows

Parameter study on numerical simulation of corner separation in LMFA-NACA65 linear compressor cascade

Weakly nonlinear propagation of small-wavelength, impulsive acoustic waves in a general atmosphere

Interaction between a large buoyant bubble and turbulence

Linear and nonlinear dynamics of pulsatile channel flow