Fluid Mechanics and Acoustics Laboratory - UMR 5509

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


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Home > Teams > Turbulence & Instabilities > Publications T&I > Publications T&I 2018

Publications T&I 2018

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Cascades of energy and helicity in axisymmetric turbulence

Article in Phys. Rev. Fluids (2018)

Cascades of energy and helicity in axisymmetric turbulence

Bo Qu, Aurore Naso, & Wouter J. T. Bos

A spectral analysis of strictly axisymmetric turbulence is performed. Both freely decaying and statistically steady flows are considered. In helical flows we identify a dual cascade, where energy (...)

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Nonlinear travelling waves in rotating Hagen-Poiseuille flow

Article in Fluid Dyn. Res. (2018)

Nonlinear travelling waves in rotating Hagen-Poiseuille flow

Benoît Pier & Rama Govindarajan

The dynamics of viscous flow through a rotating pipe is considered. Small-amplitude stability characteristics are obtained by linearizing the Navier—Stokes equations around the base flow and (...)

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Self-similar regimes of turbulence in weakly coupled plasmas under compression

Article in Phys. Rev. E (2018)

Self-similar regimes of turbulence in weakly coupled plasmas under compression

Giovanni Viciconte, Benoît-Joseph Gréa, & Fabien S. Godeferd

Plasmas under strong compression, as existing in inertial confinement fusion capsules, experience a tremendous growth of their viscosity coefficient due to the temperature increase. It is known (...)

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The effective diffusivity of ordered and freely evolving bubbly suspensions

Article in J. Fluid Mech. (2018)

The effective diffusivity of ordered and freely evolving bubbly suspensions

Aurore Loisy, Aurore Naso & Peter D. M. Spelt

We investigate the dispersion of a passive scalar such as the concentration of a chemical species, or temperature, in homogeneous bubbly suspensions, by determining an effective diffusivity (...)

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Simulations of viscous and compressible gas–gas flows using high-order finite difference schemes

Article in J. Comput. Phys. (2018)

Simulations of viscous and compressible gas–gas flows using high-order finite difference schemes

Marion Capuano, Christophe Bogey & Peter Spelt

A computational method for the simulation of viscous and compressible gas–gas flows is presented. It consists in solving the Navier–Stokes equations associated with a convection equation governing (...)

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Improved Vortex Method for Large-eddy Simulation Inflow Generation

Article in Comput. Fluids (2018)

Improved Vortex Method for Large-eddy Simulation Inflow Generation

BaolinXie, Feng Gao, Jérôme Boudet, Liang Shao & Lipeng Lu

The generation of turbulent inflow conditions in large-eddy simulation (LES) is a key ingredient for general applications of LES in both academic turbulent flows and industrial designs with (...)

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Comparison between a generalized Newtonian model and a network-type multiscale model for hemodynamic behavior in the aortic arch: Validation with 4D MRI data for a case study

Article in J. Biomechanics (2018)

Comparison between a generalized Newtonian model and a network-type multiscale model for hemodynamic behavior in the aortic arch: Validation with 4D MRI data for a case study

Marine Menut, Loïc Boussel, Xavier Escriva, Benyebka Bou-Saïd, Hélène Walter-Le Berre, Yann Marchesse, Antoine Millon, Nellie Della Schiava, Patrick Lermusiaux, John Tichy

Blood is a complex fluid in which the presence of the various constituents leads to significant changes in its rheological properties. Thus, an appropriate non-Newtonian model is advisable; and (...)

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Scaling laws for mixing and dissipation in unforced rotating stratified turbulence

Article in J. Fluid Mech. (2018)

Scaling laws for mixing and dissipation in unforced rotating stratified turbulence

Annick Pouquet, Duane Rosenberg, Raffaele Marino and Corentin Herbert

We present a model for the scaling of mixing in weakly rotating stratified flows characterized by their Rossby, Froude and Reynolds numbers , $Ro$, $Fr$, $Re$. This model is based on (...)

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Space–time dynamics of optimal wavepackets for streaks in a channel entrance flow

Article in J. Fluid Mech. (2018)

Space–time dynamics of optimal wavepackets for streaks in a channel entrance flow

Frédéric Alizard, Anne Cadiou, Lionel Le Penven, Bastien Di Pierro & Marc Buffat

The laminar–turbulent transition of a plane channel entrance flow is revisited using global linear optimization analyses and direct numerical simulations. The investigated case corresponds to (...)

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Theories and applications of second-order correlation of longitudinal velocity increments at three points in isotropic turbulence

Article in Phys. Lett. A (2018)

Theories and applications of second-order correlation of longitudinal velocity increments at three points in isotropic turbulence

J.Z. Wu, L. Fang, L. Shao & L.P. Lu

In order to introduce new physics to traditional two-point correlations, we define the second-order correlation of longitudinal velocity increments at three points and obtain the analytical (...)

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