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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Numerical analysis of the flapping mechanism for a two-phase coaxial jet

Article in Int. J. Multiph. Flow (2018)

Numerical analysis of the flapping mechanism for a two-phase coaxial jet

Nicolas Odier, Guillaume Balarac & Christophe Corre

A numerical study of a coaxial liquid jet sheared by an annular high-speed stream is performed at moderate density and velocity ratio between phases. The destabilization mechanism of the jet is (...)

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Spectral energy scaling in precessing turbulence

Article in Phys. Rev. E (2018)

Spectral energy scaling in precessing turbulence

A. Khlifi, A. Salhi, S. Nasraoui, F. Godeferd & C. Cambon

We study precessing turbulence, which appears in several geophysical and astrophysical systems, by direct numerical simulations of homogeneous turbulence where precessional instability is (...)

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A flow-pattern map for phase separation using the Navier–Stokes–Cahn–Hilliard model

Article in Eur. J. Mech. B-Fluids (2018)

A flow-pattern map for phase separation using the Navier–Stokes–Cahn–Hilliard model

Aurore Naso & Lennon Ó Náraigh

We use the Navier–Stokes–Cahn–Hilliard model equations to simulate phase separation with flow. We study coarsening — the growth of extended domains wherein the binary mixture phase separates into its (...)

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A new strategy for the numerical modeling of a weld pool

Article in Comptes Rendus Mécanique (2018)

A new strategy for the numerical modeling of a weld pool

Yassine Saadlaoui, Éric Feulvarch, Alexandre Delache, Jean-Baptiste Leblond & Jean-Michel Bergheau

Welding processes involve high temperatures and metallurgical and mechanical consequences that must be controlled. For this purpose, numerical simulations have been developed to study the effects (...)

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Vertical drafts and mixing in stratified turbulence: Sharp transition with Froude number

Article in Europhys. Lett. (2018)

Vertical drafts and mixing in stratified turbulence: Sharp transition with Froude number

Fabio Feraco, Raffaele Marino, Alain Pumir, Leonardo Primavera, Pablo D. Mininni, Annick Pouquet & Duane Rosenberg

We investigate the large-scale intermittency of vertical velocity and temperature, and the mixing properties of stably stratified turbulent flows using both Lagrangian and Eulerian fields from (...)

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Three-dimensional instability of a flow past a sphere: Mach evolution of the regular and Hopf bifurcations

Article in J. Fluid Mech. (2018)

Three-dimensional instability of a flow past a sphere: Mach evolution of the regular and Hopf bifurcations

Andrea Sansica, Jean-Christophe Robinet, Frédéric Alizard & Éric Goncalvès

A fully three-dimensional linear stability analysis is carried out to investigate the unstable bifurcations of a compressible viscous fluid past a sphere. A time-stepper technique is used to (...)

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