Computational Fluid Power
Mostrando 13-24 de 26 artigos, teses e dissertações.
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13. Análise experimental e numérica do escoamento multifásico gás-sólido em ciclones
Gas-solid are involved in various industrial processes, mainly by low power consumption for the transport of solid particles via drag a gas stream. In these cases the recovery of solid or purification of gases is promoted by cyclonic separation. Several studies on cyclones are presented in the literature from experimental studies by numerical simulation with
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/02/2010
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14. CFD analysis of the pulverized coal combustion processes in a 160 MWe tangentially-fired-boiler of a thermal power plant
The strategic role of energy and the current concern with greenhouse effects, energetic and exergetic efficiency of fossil fuel combustion greatly enhance the importance of the studies of complex physical and chemical processes occurring inside boilers of thermalpower plants. The state of the art in computational fluid dynamics and the availability of commer
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2010-12
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15. Numerical simulation of the flow under a hydraulic gate in a deviation tunnel of a hydroelectric power plant / Simulação numérica do escoamento sob a comporta de um túnel de desvio de usina hidrelétrica
Este trabalho apresenta a utilização de um modelo numérico para a determinação das forças hidrodinâmicas atuantes em comportas planas tipo vagão, utilizadas em obras de desvio de Usinas Hidrelétricas. Para isso foi utilizado o software comercial Fluent, onde foi gerado um modelo numérico tridimensional para diversas aberturas da comporta vagão ens
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/12/2009
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16. A low cost piezoelectric valve-less diaphragm pump. / Desenvolvimento de uma bomba de fluxo piezelétrica de diafragma.
Flow pumps act as important devices in areas as Bioengineering, Medicine, Pharmacy, among other areas of Engineering. Principles for pumping fluids based on piezoelectric actuators have been studied in the Department of Mechatronic and Mechanical Engineering of Escola Politécnica da Universidade de São Paulo, that allow the construction of small flow pumps
Publicado em: 2009
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17. EVALUATION AND APPLICATION OF PEMFC FUEL CELL´S TECHNOLOGIES DEVELOPED AT IPEN APPLIED TO A 500 We FUEL CELL STACK / Avaliação e aplicação da tecnologia de células a combustível tipo pem desenvolvida no IPEN em um módulo de 500W de potência nominal
This work is part of a research project on PEMFC technologies carried out in IPEN to develop and optimize a 500 We fuel cell stack. The MEAs scaling up from 25 cm2 to 144 cm2 produced by the method of sieve printing; computational fluid dynamics by computer simulation of gas flow channels in bipolar plates using COMSOL® program and the use of Pt/C electrode
Publicado em: 2009
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18. Desenvolvimento e otimização de misturador estatico com o uso da fluidinamica computacional (C.F.D.) / Development and optimization of a statistic mixer with the use of computational fluid dynamics (C.F.D.)
On conventional mixing processes, a shaft rotates one or more impellers in a fluid generally inside a process vessel. The mixing processes that use static mixers on tube fluid flow are an option to conventional processes which application and interest is continuously growing, minimizing the use of equipment industrial devices. However its application is rest
Publicado em: 2008
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19. Least squares and point-based surfaces: new perspectives and Applications / Minimos-quadrados e aproximação de superfície de pontos: novas perspectivas e aplicações
Surface reconstruction from unorganized points has been one of the most promising scientific research areas in Computer Graphics. In addition, it has been used successfully for the definition of fluid interface in numerical simulation of fluid flow. There are several reasons to that fact: for instance, considering Computer Graphics, we have the handling of o
Publicado em: 2008
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20. Determination of friction loss of drilling fluids during their flow thru special accessories. / Determinação da perda de carga de fluidos de perfuração no escoamento através de acessórios especiais.
Neste trabalho é avaliada a perda de carga resultante do escoamento de fluidos de perfuração através de acessórios especiais, que estão presentes na coluna de perfuração de poços de petróleo e são denominados tool joints, estabilizador e ejetores. Os tool joints realizam a conexão entre os tubos da coluna de perfuração, os estabilizadores são
Publicado em: 2008
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21. Identificação e monitoramento de regimes de escoamento em leito de jorro
Spouted bed has been studied intensively because of its potential of application in several processes. Identification and characterization of flow regimes in spouted bed based on visual observation have been reported in literature. However, the characterization of flow regimes based on visual observation is not either usual or possible in industrial equipmen
Publicado em: 2006
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22. Otimização exergoeconômica de ciclos de absorção para geração de potência
In this work it was shown that an aqua-ammonia absorption cycle presents an economical advantage as a bottoming-cycle in a cogeneration plant. To accomplish that, two cycles were compared: a Rankine cycle and a Kalina cycle. The former is an especially designed cycle for use of aqua-ammonia mixtures as working fluid. A computational routine was implemented t
Publicado em: 2003
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23. Simulação computacional de eventos termo-hidraulicos transitorios em multicircuitos com multibombas
PANTERA-2 (from Programa para Análise Termo-hidráulica de Reatores a ÁguaProgram for Thermal-hydraulic Analysis of Water Reactors, Version 2), whose fundamentals are described in this work, is intended to carry out rod bundle subchannel analysis in conjunction with multiloop simulation. It solves simultaneously the conservation equations of mass, axial an
Publicado em: 2003
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24. Analysis and implementation of non-Newtonian models in FreeFlow-2D system. / Análise e implementação de modelos não newtonianos no sistema FreeFlow-2D
This work presents an extention of the Freeflow-2D system to non-Newtonian free surface flows. The governing equations are solved by the finite difference method on a staggered grid. Marker particles are used to describe the fluid providing the location and the visualization of the free surface. The methodology employed is based on the GENSMAC method. The fl
Publicado em: 2002