Fluid Particle Flow
Mostrando 13-24 de 72 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. A new particle-like method for high-speed flows with chemical non-equilibrium
Abstract: The present work is concerned with the numerical simulation of hypersonic blunt body flows with chemical non-equilibrium. New theoretical and numerical formulations for coupling the chemical reaction to the fluid dynamics are presented and validated. The fluid dynamics is defined for a stationary unstructured mesh and the chemical reaction process
J. Aerosp. Technol. Manag.. Publicado em: 2010-04
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15. Set of miniaturized structure used for manipulation of mixture. / Conjunto de estruturas miniaturizadas para manipulação de misturas.
Nowadays, mainly due to products miniaturization, engineering faces new horizons, which can be easily exemplified by the enhancement on nanotechnology development. Furthermore, not only environmental contamination but also environmental monitoring must be addressed in order to produce a systemic knowledge. Therefore, the aim of this work was to determine how
Publicado em: 2010
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16. Aglomeração de polpa de acerola e proteina isolada de soja em po em leito fluidizado conico e pulsado / Agglomeration of acerola powder and soy protein isolate in a conical pulsed fluid bed
Fluid bed agglomeration is commonly used to improve the instant properties of spray-dried food powders. However, the fluidization of spray-dried particles is characterized by cracks and channels. Vibration or pulsation systems are frequently attached in the fluid bed equipments in order to improve the bed homogeneity and to allow the particles fluidization u
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/03/2009
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17. Simultaneous measurements of the solid particles velocity and concentration profiles in two phase flow by pulsed ultrasonic doppler velocimetry
In this experimental study, the pulsed ultrasonic Doppler velocimetry was used to measure simultaneously the local velocity and the local concentration in a flow of solid-liquid suspension in a horizontal pipe. In order to distinguish between the Doppler signals coming from the continuous phase, water and those of the glass bead particles larger than the Kol
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2009-12
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18. Studies using wind tunnel to simulate the Atmospheric Boundary Layer at the Alcântara Space Center
Abstract: The Alcântara Space Center (ASC) region has a peculiar topography due to the existence of a Coastal cliff, which modifies the atmospheric boundary layer characteristic in a way that can affect rocket launching operations. Wind tunnel measurements can be an important tool for the understanding of turbulence and wind flow pattern characteristics in
J. Aerosp. Technol. Manag.. Publicado em: 2009-06
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19. Mecânica de suspensões magnéticas diluídas
This work concerns with an investigation of the dynamics of dilute suspensions composed by magnetic particles, considering microstructural and macroscopic aspects of this particulate systems. From the microstructure, it is known that magnetostatic attraction may lead to formation of aggregates in magnetic suspensions. In this way, numerical simulations have
Publicado em: 2009
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20. 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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21. Estudo fluidodinâmico e térmico no transportador pneumático com alimentador tipo jorro
The pneumatic conveyor using a spouted bed as a particle feeding method has been studied in the past years in the Centro de Secagem/DEQ/UFSCar. In the literature there are some studies related to the fluid dynamics behavior of this type of conveyor, which can be found in the following works: Ferreira (1991); Ferreira e Freire (1992); Ferreira (1996), Silva (
Publicado em: 2009
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22. Fluidodinâmica de leitos fluidizados e vibrofluidizados operando com partículas planas
The use of fluidized beds as a unit operation for drying of particulate materials is common in industrial processes. However, most works published in the literature, focus the drying of uniform particles, in a narrow range of size distribution. The appealing characteristics of fluidization for drying led some authors to suggest its use for drying of particle
Publicado em: 2009
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23. Study of Fluidized Bed Hot Melt Granulation using solid Dispersion of Indomethacin / Estudo da granulação por solidificação de materiais fundidos em leito fluidizado utilizando dispersão sólida de indometacina
Recently, there is a renewed interest in the fluidized bed hot melt granulation for the preparation of solid dosage forms in the pharmaceutical industry and academy. The several advantages of this technique have attracted may researchers, but the main advantage are undoubtedly the solvent free operation and the short processing times. The aim of this work wa
Publicado em: 2009
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24. Analise experimental e numerica de um jato de dispersão gas-solido / Experimental and numerical analysis of a dispersion gas-solid jet
Apresenta-se nesta pesquisa uma análise experimental e numérica do comportamento da fase dispersa em um jato circular bifásico confinado e uma comparação com jato circular bifásico livre. Nas análises experimentais, uma câmara pentagonal em acrílico foi utilizada como sistema de confinamento para a obtenção de perfis axiais e radiais de velocidade
Publicado em: 2009