Streamlines
Mostrando 13-24 de 28 artigos, teses e dissertações.
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13. Natural convection heat transfer in partially open enclosures containing an internal local heat source
A numerical study was conducted to investigate steady heat transfer and flow phenomena of natural convection of air in enclosures, with three aspect ratios (H/W = 1, 2, and 4), within which there is a local heat source on the bottom wall at three different positions, Wh. This heat source occupies 1% of the total volume of the enclosure. The vertical walls in
Brazilian Journal of Chemical Engineering. Publicado em: 2007-09
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14. Patrones de flujo según diferentes marcos de referencia
In a diagnostic exam on fluid mechanics, in which students are asked to draw flow diagrams of a simple geometry case, there is an apparent confusion associated to reference frame changes. As a didactic tool, we propose a comparative analysis of flow diagrams on different relative movement conditions of the same system, consisting in a cylindric pipe containi
Revista Brasileira de Ensino de Física. Publicado em: 2005-09
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15. Numerical analysis of water melting and solidification in the interior of tubes
Latent energy storage systems find applications in many engineering fields, including industrial refrigeration plants, air conditioning installations, recovery of heat in industrial processes, etc. To tackle the design of such systems, it is necessary to have correlations to account for the heat transfer during the melting and solidification of the phase cha
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2005-06
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16. DESIGN, NUMERICAL SIMULATION AND EXPERIMENTAL EVALUATION OF AN INERTIAL IMPACTOR USED TO COLLECT ATMOSPHERIC AEROSOLS / PROJETO, SIMULAÇÃO NUMÉRICA E TESTE EXPERIMENTAL DE UM IMPACTADOR INERCIAL EM CASCATA PARA AMOSTRAGEM DE AEROSSÓIS ATMOSFÉRICOS
Impactors are simple devices in which a sample flows of air and pollutants flow around an obstacle, called impaction plate. Particles with sufficient inertia will slip across the flow streamlines and impact on the obstacle. Particles with less inertia will follow the airflow away from the impaction surface. Inertial cascade impactors have more than one impac
Publicado em: 2005
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17. Hypersonic flow of rarefied gas near the Brazilian satellite during its reentry into atmosphere
To calculate aerothermodynamic characteristics of the Brazilian satellite SARA (Portuguese abbreviation: SAtélite de Reentrada Atmosférica) during its re-entry the Direct Simulation Monte Carlo method is applied. The numerical calculations were carried out in a wide range of the gas rarefaction beginning from the free molecular regime up to the hydrodynami
Brazilian Journal of Physics. Publicado em: 2003-06
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18. Aceleração e fluxos potenciais em relatividade geral : resultados analiticos e numericos
Analytical and numerical solutions for the integral curves of the velocity field (streamlines) of a steady-state flow of an ideal fluid with p = ( g -1) equation of state are presented. When g = 2, the streamlines associated with an accelerate black hole and a rigid sphere are studied in some detail, as well as, the velocity fields of a black hole and a rigi
Publicado em: 2002
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19. SIMULATION OF TRANSPORT AND DEPOSITION OF SILICICLASTIC SEDIMENTS IN PLATAFORM, SLOPE, AND BASIN ENVIRONMENTS / SIMULAÇÃO DE TRANSPORTE E DEPOSIÇÃO DE SEDIMENTOS SILICICLÁSTICOS EM AMBIENTES DE PLATAFORMA, TALUDE E BACIA
Sedimentary Geology deals with the study of the physical, chemical and biological processes operating in the surface of the Earth, not only in the present days, but also along all History. Therefore, it can be applied in miscellaneous fields, as, for example, in the study of fossils fuels formation. One of the main focus of sedimentary geology inhabits in de
Publicado em: 2002
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20. Aplicação de texturas em visualização científica. / Texture applied in scientific visualisation.
A crescente disponibilidade de recursos computacionais para o cálculo, simulação e aquisição de dados permite que cientistas e engenheiros produzam enormes conjuntos de dados, bi ou tridimensionais, em geral multivariados. A aplicação de técnicas de Computação Gráfica com o objetivo de ganhar compreensão desses dados compreende o objeto de estudo
Publicado em: 2001
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21. An alternative finite element formulation for determination of streamlines in two-dimensional problems
It is well known that the numerical solutions of incompressible viscous flows are of great importance in Fluid Dynamics. The graphics output capabilities of their computational codes have revolutionized the communication of ideas to the non-specialist public. In general those codes include, in their hydrodynamic features, the visualization of flow streamline
Journal of the Brazilian Society of Mechanical Sciences. Publicado em: 2000
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22. Metodologia de obtenção de resultados em fluido-dinamica computacional : aplicação a reatores tanques agitados
In this thesis, procedure for obtaintion of vector and scalar fields is shown and applied to stirred tank reactors. The methodology of the present work is emphasized through case studies with a Newtonian fluid, water, and a non-Newtonian system, polystyrene. Both fluids are contained inside a stirred tank reactor. The system stirred tank reactors is studied
Publicado em: 1997
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23. Modelagem bidimensional da injeção de agua em reservatorios heterogeneos
This work studies the application of strearntube theory joined with a two-porosity linear model in heterogeneous reservoirs under injection of a incompressible wetting fluid and the production of a non-wetting fluid. It was considered that the streamlines are fixed and there is no flow between each channel. Gravity was neglected and the imbibition phenomena
Publicado em: 1996
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24. A study of the structure of the synoptic pertubation from northeast Brazilian / Um estudo da estrutura das pertubações sinóticas do Nordeste do Brasil
An analysis of synoptic disturbances which appear in the Northeast Brazil region is presented. Three periods were selected and classified as disturbed and non-disturbed, "according to the occurrence or not .of a significant amount of rainfall. Streamlines, isotachs, and vertical velocity (omega) charts are presented for the selected periods. Vertical velocit
Publicado em: 1975