Turbulent Difusion
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. Um estudo numérico sobre a transferência de calor na camada limite turbulenta
The present work is a numerical study on the applicaion of analogies between heat and momentum difusion as a methodology to impose heat flux boundary conditions in turbulent boundary layer flows. In order to validate the proposed methodology the following cases were tested: a) a study of turbulent flows over slightly heated flat plates and with unheated star
Publicado em: 2009
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2. STUDY OF TURBULENT DIFUSION EMPLOYING LAGRANGIAN STOCHASTIC MODELS / ESTUDO DA DIFUSÃO TURBULENTA EMPREGANDO MODELOS ESTOCÁSTICOS LAGRANGEANOS
In this work, the Lagrangian stochastic particle model LAMBDA is utilized to simulate the dispersion and the transport of contaminants under different atmospheric conditions. The analysis employs three different field experiments of atmospheric diffusion: the Copenhagen experiment, which was accomplished in unstable conditions, the Prairie Grass experiment i
Publicado em: 2007
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3. Modelagem da dispersão de poluentes leves em ambientes complexos / SIimulation the light pollutant dispersion in the complex environments
Este trabalho propõe uma metodologia para simular o transporte de poluentes leves sob a ação de campos de ventos em ambientes complexos. O método consiste na divisão da clássica equação de difusão advectiva em duas componentes, uma laminar e outra turbulenta. A primeira representa o campo de ventos, determinado a partir de poucas amostras devidament
Publicado em: 2006
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4. Modelagem e simulação do escoamento axial anular de mistura solido-fluido não-newtoniano em dutos horizontais e inclinados
Amechanistic model was developed to describe the steady-state flow of solid ? non newtonian fluid mixtures in inclined or horizontal eccentric annullus. Themodel consists of a two-layer configuration, the top layer being aheterogeneous suspension and the botton one acompact bed of solids. Conservation laws of mass and linear momentum were formulated for the
Publicado em: 1990