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Anisotropies and Universality of Buoyancy-Dominated Turbulent Fluctuations: A Large-Eddy Simulation Study
Publisher: American Meteorological Society
Abstract: Turbulent fluctuations of both velocity and temperature fields, issuing from high-resolution large-eddy simulations, have been analyzed in convective boundary layers. The numerically simulated flows are strongly anisotropic ...
Statistics of Temperature Fluctuations in a Buoyancy-Dominated Boundary Layer Flow Simulated by a Large Eddy Simulation Model
Publisher: American Meteorological Society
Abstract: Temperature fluctuations in an atmospheric convective boundary layer are investigated by means of large eddy simulations (LESs). A novel statistical characterization for both weak temperature fluctuations and strong ...
3D Chaotic Model for Subgrid Turbulent Dispersion in Large Eddy Simulations
Publisher: American Meteorological Society
Abstract: A 3D multiscale kinematic velocity field is introduced as a model to simulate Lagrangian turbulent dispersion. The incompressible velocity field is a nonlinear deterministic function, periodic in space and time, that ...