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

Article dans Comput. Methods Biomech. Biomed. Eng. (2014)

Mechanical action of the blood onto atheromatous plaques : influence of the stenosis shape and morphology

Tristan Belzacq, Stéphane Avril, Emmanuel Leriche & Alexandre Delache

The vulnerability of atheromatous plaques in the carotid artery may be related to several factors, the most important being the degree of severity of the endoluminal stenosis and the thickness of (...)

Article dans Eur. J. Mech. B-Fluids (2014)

DNS of bypass transition in entrance channel flow induced by boundary layer interaction

Marc Buffat, Lionel Le Penven, Anne Cadiou & Julien Montagnier

Developing entrance flows are of interest in a large number of application areas. They have been widely studied in the past, but many aspects of these flows are not yet fully understood. One of (...)

Article dans Annu. Rev. Fluid Mech. (2014)

Numerical Simulations of Flows with Moving Contact Lines

Yi Sui, Hang Ding & Peter D.M. Spelt

Computational methods have been extended recently to allow for the presence of moving contact lines in simulated two-phase flows. The predictive capability offered by these methods is potentially (...)

Article dans IMA J. Numer. Anal. (2014)

BDDC preconditioners for continuous and discontinuous Galerkin methods using spectral/hp elements with variable local polynomial degree

Claudio Canuto, Luca F. Pavarino & Alexandre B. Pieri

Locally adapted meshes and polynomial degrees can greatly improve spectral element accuracy and applicability. A balancing domain decomposition by constraints (BDDC) preconditioner is constructed (...)

Article dans Phys. Fluids (2014)

Thermal boundary layer near roughnesses in turbulent Rayleigh-Bénard convection : Flow structure and multistability

J. Salort, O. Liot, E. Rusaouen, F. Seychelles, J.-C. Tisserand, M. Creyssels, B. Castaing & F. Chillà

We present global heat-transfer and local temperature measurements, in an asymmetric parallelepiped Rayleigh-Bénard cell, in which controlled square-studs roughnesses have been added. A global (...)

Article dans Phys. Rev. E (2014)

Nonlinear dynamics and anisotropic structure of rotating sheared turbulence

A. Salhi, F. G. Jacobitz, K. Schneider & C. Cambon

Homogeneous turbulence in rotating shear flows is studied by means of pseudospectral direct numerical simulation and analytical spectral linear theory (SLT). The ratio of the Coriolis parameter (...)

Article dans Phys. Fluids (2014)

Scale by scale anisotropy in freely decaying rotating turbulence

Alexandre Delache, Claude Cambon & Fabien Godeferd

We analyse the anisotropy present at different scales in rotating homogeneous turbulence. The Zeman wavenumber $k_\Omega$ [O. Zeman, “A note on the spectra and decay of rotating homogeneous (...)

Article dans J. Fluid Mech. (2014)

Wave turbulence in a rotating channel

Julian F. Scott

This paper describes wave-turbulence closure and its consequences for rapidly rotating (i.e. small Rossby number) turbulence confined by two infinite, parallel walls perpendicular to the rotation (...)

Article dans Dyn. Atmos. Ocean. (2014)

Characterizing turbulent overturns in CTD-data

Hans van Haren & Louis Gostiaux

We are concerned with the shape of overturns due to irreversible effects of turbulent mixing through internal wave breaking in the ocean. Vertical $(z)$ overturn displacements $(d)$ are computed (...)

Article dans J. Fluid Mech. (2014)

Absolute instabilities in eccentric Taylor–Couette–Poiseuille flow

Colin Leclercq, Benoît Pier & Julian F. Scott

The effect of eccentricity on absolute instabilities (AI) in the Taylor–Couette system with pressure-driven axial flow and fixed outer cylinder is investigated. Five modes of instability are (...)

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

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Publications T&I 2014

Mechanical action of the blood onto atheromatous plaques : influence of the stenosis shape and morphology

DNS of bypass transition in entrance channel flow induced by boundary layer interaction

Numerical Simulations of Flows with Moving Contact Lines

BDDC preconditioners for continuous and discontinuous Galerkin methods using spectral/hp elements with variable local polynomial degree

Thermal boundary layer near roughnesses in turbulent Rayleigh-Bénard convection : Flow structure and multistability

Nonlinear dynamics and anisotropic structure of rotating sheared turbulence

Scale by scale anisotropy in freely decaying rotating turbulence

Wave turbulence in a rotating channel

Characterizing turbulent overturns in CTD-data

Absolute instabilities in eccentric Taylor–Couette–Poiseuille flow