Statistical description of turbulent dispersion
نویسندگان
چکیده
منابع مشابه
Statistical Description of Turbulent Flows
This chapter focuses on the statistical approach to turbulence. On the one hand, it seeks to describe the evolution of mean and turbulent fields, and on the other, to highlight the transfer terms between these two fields. This splitting, introduced in 1883byReynolds, is not unique, nor themost satisfactory.Other flowdecompositions are given in Chaps. 8 and 9. Nevertheless, the Reynolds approach...
متن کاملComparison of Turbulent Particle Dispersion Models in Turbulent Shear Flows
This work compares the performance of two Lagrangian turbulent particle dispersion models: the standard model (e.g., that presented in Sommerfeld et al. (1993)), in which the fluctuating fluid velocity experienced by the particle is composed of two components, one correlated with the previous time step and a second one randomly sampled from a Wiener process, and the model proposed by Minier and...
متن کاملTurbulent dispersion in the ocean
The mathematical framework for turbulent transport in the ocean is reasonably well established. It may be applied to large-scale fields of scalars in the ocean and to the instantaneous or continuous discharge from a point. The theory and its physical basis can also provide an interpretation of passive scalar spectra. Spatial variations in the rate of turbulent transfer can be related to the mov...
متن کاملSome Aspects of Turbulent Relative Particle Dispersion
In this paper, several aspects of the turbulent relative particle dispersion are considered, many of which are motivated by laboratory experiment and numerical simulation results. These are, * spatial intermittency effects, (a) reduction of relative particle dispersion in 3D; (b) prevalence of power-law scaling of relative particle dispersion in 2D enstrophy cascade; * quasi-geostrophic aspects...
متن کاملKinematic simulation of multi point turbulent dispersion
As three particles are advected by a turbulent flow, they separate from each other and develop non trivial geometries, which effectively reflect the structure of the turbulence. We investigate here the geometry, in a statistical sense, of three Lagrangian particles advected, in 2-dimensions, by Kinematic Simulation (KS). KS is a Lagrangian model of turbulent diffusion that makes no use of any d...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review E
سال: 2012
ISSN: 1539-3755,1550-2376
DOI: 10.1103/physreve.86.066309