Turbulence Fluide et Plasma-en Turbulence Fluide et Plasma-fr
[Turbulence Fluide et Plasma] Transport and turbulent transfert
article rubrique
Sunday 28 November 2010
traduction
Time-dependent transport coefficients: an effective macroscopic description of small scale dynamics?
Debbasch, F. and Rivet, J.P
Situations where particles taken from a thermal reservoir are immersed at some initial time in a fluid are considered. The diffusion model is the Ornstein–Uhlenbeck process. It is (...) Read the whole article
Sunday 28 November 2010
traduction
Stochastic models of thermodiffusion
Chevalier, C., Debbasch, F. and Rivet, J.P.,
New stochastic models of thermodiffusion are constructed and their hydrodynamical limits are studied through a first-order Chapman–Enskog expansion. These models differ from earlier (...) Read the whole article
Sunday 28 November 2010
traduction
Thermodiffusion: from kinetics to stochastics
Debbasch, F. and Rivet, J.P.
The Boltzmann transport equation is used to obtain new effective stochastic descriptions of dilute gas diffusion in presence of temperature gradients. It is found that temperature (...) Read the whole article
Sunday 28 November 2010
traduction
Stochastic suspensions of heavy particles
Bec, J., Cencini, M., Hillerbrand, R. and Turitsyn, K.
Turbulent suspensions of heavy particles in incompressible flows have gained much attention in recent years. A large amount of work focused on the impact that the inertia and the (...) Read the whole article
Saturday 27 November 2010
traduction
Finite-size effects in the dynamics of neutrally buoyant particles in turbulent flow
HOLGER HOMANN and JÉRÉMIE BEC
The dynamics of neutrally buoyant particles transported by a turbulent flow is investigated for spherical particles with radii of the order of the Kolmogorov dissipative scale or (...) Read the whole article
Saturday 27 November 2010
traduction
Turbulent pair dispersion of inertial particles
J. BEC, L. BIFERALE, A. S. LANOTTE, A. SCAGLIARINI and F. TOSCHI
The relative dispersion of pairs of inertial point particles in incompressible, homogeneous and isotropic three-dimensional turbulence is studied by means of direct numerical (...) Read the whole article