Impeller
Mostrando 13-24 de 45 artigos, teses e dissertações.
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13. Simulação do escoamento monofásico em um estágio de uma bomba centrífuga utilizando técnicas de fluidodinâmica computacional
Oil production and exploration techniques have evolved in the last decades in order to increase fluid flows and optimize how the required equipment are used. The base functioning of Electric Submersible Pumping (ESP) lift method is the use of an electric downhole motor to move a centrifugal pump and transport the fluids to the surface. The Electric Submersib
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/12/2010
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14. Evaluation of 5-axis HSC dynamic behavior when milling TiAl6V4 blades
Gas combustion represents the second principal way of electricity generation due to its disposal, and smaller dimension and pollution capacity when compared with diesel engines. The conversion of natural gas in electricity is made through gas turbines, and the rotors of its compressors are components that present significant difficulty in its manufacture. Th
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2010-09
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15. A new aproach to characterize suspensions in stirred vessels based on computational fluid dynamics
Fluid dynamics simulations were applied for evaluating the suspension of particles in stirred vessels. The spatial distribution of particles throughout the vessel was characterized by a single parameter, here called the suspension quality (s). Based on simulation results, a semi-empirical correlation was developed that correlated the suspension quality with
Brazilian Journal of Chemical Engineering. Publicado em: 2010-06
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16. Produção de micropartículas de alginato contendo Flavobacterium columnare inativada pelo método de emulsão para vacinação de peixes por via oral
Alginate microparticles were prepared by an emulsion method aiming oral controlled release of antigens to fish. The effects of emulsification temperature and impeller type on particle morphology, average diameter, and size distribution were evaluated. Microparticles contaning formalin-killed Flavobacterium columnare cells (a model antigen) were prepared and
Química Nova. Publicado em: 2010
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17. Secagem de biomassa de levedura (Saccharomyces cerevisiae) em um secador atmosferico condutivo com agitação mecanica : caracterização e avaliação do produto seco como bioadsorvente e complemento nutricional / Drying of yeast biomass (Saccharomyces cerevisiae) in a mechanically shaken conductive atmospheric dryer : characterization and evaluation of the dry material as bioadsorbent and nutritional complement
This thesis allowed evaluating the conductive atmospheric dryer with mechanical agitation, using glass beads as inert particles for drying a residue from brewery (yeast of Saccharomyces cerevisiae species) after being used eight times. The dryer was operated with the sediment load of yeast (150 g and 300 g), heating surface temperature (60 ºC and 90 ºC) an
Publicado em: 2010
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18. Otimização do impelidor KPC utilizando fluidodinâmica computacional (CFD) / Optimization of KPC impeller using computational fluid dynamics (CFD)
Um impelidor ideal para suspensões deve prover a suspensão completa ou homogeneização utilizando o mínimo de energia. O fluxo em um tanque agitado depende da geometria do impelidor, do diâmetro e da localização deste, do diâmetro e do fundo do tanque e da geometria de internos. A Fluidodinâmica Computacional (CFD) é uma ferramenta poderosa para pr
Publicado em: 2010
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19. Coarse particle suspension in mechanical flotation cells. / Suspensão de partículas grossas em células mecânicas de flotação.
Several attempts to correlate particle size and flotation response at the biggest Brazilian plants (iron ore and phosphate) have concluded that coarse particles (dp 100m) do not float efficiently. As solids suspension is a necessary precondition for particle collection, the study of coarse particle suspension in mechanical cells is fully justified and it is
Publicado em: 2009
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20. Influence of experimental conditions on the incorporation of water droplets in polystyrene
The substitution of volatile hydrocarbons by the use of water as blowing agent in the synthesis of expandable polystyrene particles has been studied in the last decades. In this work, an investigation was made of the influence of experimental parameters on the incorporation of water in the synthesis of water-expandable polystyrene. The synthesis procedure wa
Polímeros. Publicado em: 2009
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21. Effect of the stirring speed, the type of impeller and the feed strategy in a mechanically stirred pilot-scale anaerobic sequencing batch reactor / Estudo da influência da agitação e da estratégia de alimentação sobre o desempenho de um ASBR em escala piloto aplicado ao tratamento de esgoto sanitário
The objective of this work was to assess the effect of the stirring speed, the type of impeller and the feed strategy in a mechanically stirred pilot-scale (da ordem de1 M POT.3) anaerobic sequencing batch reactor to two configurations: a containing granulated biomass (ASBR) and the other containing immobilized biomass (AnSBBR). Domestic wastewater was treat
Publicado em: 2008
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22. Performance optimization of impellers of flow hydraulic pumps from classics criteria of design - experimental verifications. / Otimização de desempenho de rotores de bombas hidráulicas de fluxo a partir de critérios clássicos de projeto - verificações experimentais.
Este trabalho tem como objetivo analisar e otimizar o desempenho de uma bomba hidráulica de fluxo através do redimensionamento de seu rotor. A partir da teoria acerca do pré-dimensionamento de rotores pelo método clássico (também conhecido como método geométrico) propõe-se uma planilha eletrônica que permite obter as dimensões básicas necessária
Publicado em: 2008
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23. Luta pela terra, reforma agrária e territorialização: produção de espaços para trabalho e vida. Itaetê/ Bahia: 1997-2007
This research is delimitated by the social dynamics of the population settled in the municipality of Itaete, in Bahia, and it is centred in their ―territorialization‖ as a process of development. The period 1997 to 2007 is divided in two singular moments, the fight for land and the nesting, which are observed by different social structures: campe
Publicado em: 2008
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24. Recombinant human proinsulin from transgenic corn endosperm: solvent screening and extraction studies
Recombinant pharmaceutical proteins are being produced in different systems such as bacteria and mammalian cell cultures. The use of transgenic plants as bioreactors has recently arisen as an alternative system offering many practical and economic advantages. However, finding an optimum strategy for the downstream processing (DSP) of recombinant proteins fro
Brazilian Journal of Chemical Engineering. Publicado em: 2007-09