Eddy Viscosity And Diffusion
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. A Study of Physical and Numerical Effects of Dissipation on Turbulent Flow Simulations
ABSTRACT: The present work is primarily concerned with studying the effects of artificial dissipation and of certain diffusive terms in the turbulence model formulation on the capability of representing turbulent boundary layer flows. The flows of interest in the present case are assumed to be adequately represented by the compressible Reynolds-averaged Navi
J. Aerosp. Technol. Manag.. Publicado em: 2013-06
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2. Solução via LES de chamas difusivas de metano, metanol e etanol
This work presents a model for a jet diffusion flame, for low Mach and high Damköhler numbers. The model is based on the solution of the flamelet equations for the chemistry and on the mixture fraction for the flow. This model describes well the behavior of diffusion flames, except at the flame tip, where instabilities can often occur. Numerical results are
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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3. MODELO ESPECTRAL DE HEISENBERG APLICADO AO DECAIMENTO DA TURBULÊNCIA NA CAMADA RESIDUAL / SPECTRAL MODEL DE HEISENBERG APPLIED TO THE DECLINE OF THE TURBULENCE IN RESIDUAL LAYER
In the study of the dispersion of contaminants in the atmosphere by computational simulations, the Eulerian approach, based in the diffusionadvection equation, is largely employed. In these simulations, concentration values are calculated at each point of a fixed grid in space and time and for this to be done it is necessary to determine an appropriated eddy
Publicado em: 2005
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4. Residual Circulation and Salt Stratification in Partially Mixed Estuarine Channels: Simulation with Analytical Models / "Circulação estacionária e estratificação de sal em canais estuarinos parcialmente misturados: simulação com modelos analíticos"
O presente estudo descreve a circulação estacionária e a estratificação de sal no sistema estuarino de Cananéia e no Canal de Bertioga. Os modelos de Hansen &Rattray (1965), Fisher et al. (1972), Prandle (1985) e Miranda (1998) foram escolhidos para a simulação dos perfis verticais do componente longitudinal da velocidade e da salinidade. Os dados ex
Publicado em: 2001