Results 171 to 180 of about 33,802 (217)
Some of the next articles are maybe not open access.
Kármán–Howarth solutions of homogeneous isotropic turbulence
Journal of Fluid Mechanics, 2021The Kármán–Howarth equation (KHEq) is solved using a closure model to obtain solutions of the second-order moment of the velocity increment, $S_2$ , in homogeneous isotropic turbulence (HIT). The results are in good agreement with experimental data for decaying turbulence and are also consistent with calculations based on the
L. Djenidi, R.A. Antonia
openaire +1 more source
Homogeneous isotropic turbulence in dilute polymers
Journal of Fluid Mechanics, 2005The modification of the turbulent cascade by polymeric additives is addressed by direct numerical simulations of homogeneous isotropic turbulence of a FENE-P fluid. According to the appropriate form of the Kármán–Howarth equation, two kinds of energy fluxes exist, namely the classical transfer term and the coupling with the polymers.
DE ANGELIS, ELISABETTA +3 more
openaire +5 more sources
Particles-turbulence interaction in stationary, homogeneous, isotropic turbulence
International Journal of Multiphase Flow, 2000Abstract A physical model for the dynamics of a dispersion of solid spherical particles in an incompressible viscous fluid is outlined and used to calculate the turbulence modulation in a stationary, homogeneous and isotropic turbulent flow with particles.
G Ooms, G.H Jansen
openaire +1 more source
Compressible Homogeneous Isotropic Turbulence
2018This chapter is devoted to isotropic incompressible turbulence. The main features of related theories are discussed, along with the recent results: energy spectrum and two-point correlations and related models, closures for non-linear terms in both physical and Fourier space, theories for grid turbulence decay including fractal grid case, non ...
Pierre Sagaut, Claude Cambon
openaire +1 more source
Homogeneous and Isotropic Turbulence
2015The study of homogeneous and isotropic turbulence is very rewarding for two reasons. On the one hand, it is possible to do an important part of it analytically, and on the other hand, the smallest turbulent structures in most turbulent flows have an almost isotropic behaviour.
Christophe Bailly +1 more
openaire +1 more source
Particle-Turbulence Interaction in a Homogeneous, Isotropic Turbulent Suspension
Applied Mechanics Reviews, 2006A review is given of numerical, analytical, and experimental research regarding the two-way coupling effect between particles and fluid turbulence in a homogeneous, isotropic turbulent suspension. The emphasis of this review is on the effect of the suspended particles on the spectrum of the carrier fluid, in order to explain the physical mechanisms ...
Christian Poelma, Gijs Ooms
openaire +1 more source
Particle behavior in homogeneous isotropic turbulence
Acta Mechanica Sinica, 2005zbMATH Open Web Interface contents unavailable due to conflicting licenses.
He, Zhu +4 more
openaire +1 more source
Deterministic forcing of homogeneous, isotropic turbulence
Physics of Fluids, 1994A deterministic low-wave-number forcing scheme designed to obtain statistically stationary homogeneous, isotropic turbulence in incompressible flows, and address criticisms of earlier schemes is proposed. Three-dimensional turbulent kinetic energy spectra collapse well and are more consistent with the experimentally determined Kolmogorov coefficient ...
Neal P. Sullivan +2 more
openaire +1 more source
Bubbles in Isotropic Homogeneous Turbulence
2012An experimental study of the bubble deformation in an isotropic homogeneous turbulent flow field was carried out. It is of a fundamental importance to understand the rate of coalescence and breakup in two phase disperse flows.
Ernesto Mancilla +3 more
openaire +1 more source
Homogeneous Isotropic Turbulence
1977Many theoretical investigations of turbulence have been developed around the concept of homogeneous, isotropic turbulence — turbulence of which the statistical properties do not vary with position and have no preferred direction. An approximation to such a motion can be obtained behind a grid, such as the one shown in Fig. 21.1, in a wind-tunnel.
openaire +1 more source