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Extensive characterization of a high Reynolds number decelerating boundary layer using advanced optical metrology

Autor: Cuvier, C., Srinath, S., Stanislas, M., Foucaut, J. -M., Laval, J. -P., Kähler, C. J., Hain, R., Scharnowski, S., Schröder, A., Geisler, R., Agocs, J., Röse, A., Willert, C., Klinner, J., Amili, O., Atkinson, C., Soria, J.

An experiment conducted in the framework of the EUHIT project and designed to characterize large scale structures in an adverse pressure gradient boundary layer flow is presented. Up to 16 sCMOS cameras were used in order to perform large scale turbu

Externí odkaz: http://arxiv.org/abs/1702.02834

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The streamwise turbulence intensity in the intermediate layer of turbulent pipe flow

Autor: Vassilicos, J. C., Laval, J. -P., Foucaut, J. -M., Stanislas, M.

Publikováno v: Journal of Fluid Mechanics, Volume 774, pp. 324-341 (2015)

The spectral model of Perry, Henbest & Chong (1986) predicts that the integral length-scale varies very slowly with distance to the wall in the intermediate layer. The only way for the integral length scale's variation to be more realistic while keep

Externí odkaz: http://arxiv.org/abs/1411.7276

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Small-scale turbulent dynamo - a numerical investigation

Autor: West, R. J., Nazarenko, S., Laval, J. P., Galtier, S.

We present the results of a numerical investigation of the turbulent kinematic dynamo problem in a high Prandtl number regime. The scales of the magnetic turbulence we consider are far smaller than the Kolmogorov dissipative scale, so that the magnet

Externí odkaz: http://arxiv.org/abs/astro-ph/0305396

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A model for rapid stochastic distortions of small-scale turbulence

Autor: Dubrulle, B., Laval, J. -P., Nazarenko, S., Zaboronski, O.

We present a model describing evolution of the small-scale Navier-Stokes turbulence due to its stochastic distortions by much larger turbulent scales. This study is motivated by numerical findings (laval, 2001) that such interactions of separated sca

Externí odkaz: http://arxiv.org/abs/physics/0304035

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Granularity-induced gapless superconductivity in NbN films: evidence of thermal phase fluctuations

Autor: Lamura, G., Villegier, J. C., Gauzzi, A., Cochec, J. Le, Laval, J. Y., Placais, B., Hadacek, N., Bok, J.

Using a single coil mutual inductance technique, we measure the low temperature dependence of the magnetic penetration depth in superconducting NbN films prepared with similar critical temperatures around 16 K but with different microstructures. Only

Externí odkaz: http://arxiv.org/abs/cond-mat/0201296

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Fast Numerical simulations of 2D turbulence using a dynamic model for Subgrid Motions

Autor: Laval, J. -P., Dubrulle, B., Nazarenko, S.

Publikováno v: Journal of Computational Physics, vol 196 (1), pp 184-207 (2004)

We present numerical simulation of 2D turbulent flow using a new model for the subgrid scales which are computed using a dynamic equation linking the subgrid scales with the resolved velocity. This equation is not postulated, but derived from the con

Externí odkaz: http://arxiv.org/abs/physics/0101037

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Non-locality and Intermittency in 3D Turbulence

Autor: Laval, J. -P., Dubrulle, B., Nazarenko, S.

Publikováno v: Physics of Fluids, vol 13, pp 1995-2012 (2001)

Numerical simulations are used to determine the influence of the non-local and local interactions on the intermittency corrections in the scaling properties of 3D turbulence. We show that neglect of local interactions leads to an enhanced small-scale

Externí odkaz: http://arxiv.org/abs/physics/0101036

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