Telegraph-Type versus Diffusion-Type Models of Turbulent Relative Dispersion
نویسندگان
چکیده
منابع مشابه
Chaotic Lagrangian models for turbulent relative dispersion.
A deterministic multiscale dynamical system is introduced and discussed as a prototype model for relative dispersion in stationary, homogeneous, and isotropic turbulence. Unlike stochastic diffusion models, here trajectory transport and mixing properties are entirely controlled by Lagrangian chaos. The anomalous "sweeping effect," a known drawback common to kinematic simulations, is removed thr...
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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...
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ژورنال
عنوان ژورنال: Journal of the Physical Society of Japan
سال: 2009
ISSN: 0031-9015,1347-4073
DOI: 10.1143/jpsj.78.024401