LAGRANGIAN FLOW SIMULATION WITH SUB-PARTICLE-SCALE TURBULENCE MODEL
نویسندگان
چکیده
منابع مشابه
Lagrangian scale of particle dispersion in turbulence.
Transport of mass, heat and momentum in turbulent flows by far exceeds that in stable laminar fluid motions. As turbulence is a state of a flow dominated by a hierarchy of scales, it is not clear which of these scales mostly affects particle dispersion. Also, it is not uncommon that turbulence coexists with coherent vortices. Here we report on Lagrangian statistics in laboratory two-dimensional...
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چکیده ندارد.
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We report measurements of the second-order Lagrangian structure function and the Lagrangian velocity spectrum in an intensely turbulent laboratory flow. We find that the asymmetries of the large-scale flow are reflected in the small-scale statistics. In addition, we present new measurements of the Lagrangian structure function scaling constantC0, which is of central importance to stochastic tur...
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A wide range of relative two-particle dispersion statistics from the Lagrangian Kinematic Simulation ~KS! model, which contains turbulent-like flow structures, compares well with Yeung’s @Phys. Fluids 6, 3416 ~1994!# DNS results. In particular, the Lagrangian flatness factor m4(t) compares excellently ~better than Heppe’s @J. Fluid Mech. 357, 167 ~1998!# nonlinear stochastic model!. For higher ...
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ژورنال
عنوان ژورنال: PROCEEDINGS OF HYDRAULIC ENGINEERING
سال: 2000
ISSN: 0916-7374,1884-9172
DOI: 10.2208/prohe.44.575