Gas Solid Flow
Mostrando 1-12 de 81 artigos, teses e dissertações.
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1. Calibration of simulation parameters for wind erosion gas-solid two-phase flow in arid and semiarid soils
RESUMO Para construir um modelo de simulação acoplada da erosão eólica do solo e fluxo bifásico em regiões áridas e semi-áridas, os parâmetros de contato apropriados do modelo de simulação de elementos discretos do solo são obtidos com base no teste de calibração do ângulo de repouso (AoR). O modelo de simulação acoplado foi estabelecido atr
Revista Brasileira de Engenharia Agrícola e Ambiental. Publicado em: 2022
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2. Microstructure and Flight Behaviors of Droplet and its Solidification in Twin-Wire Arc Sprayed Ni-Al Composite Coatings
Droplet flight and solidification behaviors during twin-wire arc sprayed (TWAS) composite coatings were systematically investigated. Both theoretical model and numerical method were established for calculating the droplet deformation, breakup and solidification process in air flow based on the volume of fluid (VOF) dual-phase flow model jointed with the stan
Mat. Res.. Publicado em: 19/03/2018
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3. Gas permeability of bentonite barriers: development, construction and testing of a measurement system
Abstract This article proposes a testing device to quickly and reliably estimate the gas permeability of bentonite-based clay barriers used in landfill cover systems. The testing methodology is based on a transient gas flow regime that passes through the barrier, therefore not requiring the use of sophisticated equipment that aim to maintain constant differe
REM, Int. Eng. J.. Publicado em: 2016-12
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4. STUDY OF FEEDSTOCK INJECTION TO IMPROVE CATALYST HOMOGENIZATION IN THE RISER OF A FCC
Abstract A three dimensional gas-solid reactive flow model based on the Eulerian-Eulerian approach was used to study the effects of different nozzle designs with internal parts inside the FCC riser. The simulations were solved using Computational Fluid Dynamics (CFD) with CFX version 14.0 as tool. The results showed that the nozzle designs have a significant
Braz. J. Chem. Eng.. Publicado em: 2016-09
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5. Element Determination in Pharmaceuticals Using Direct Solid Analysis- Electrothermal Vaporization Inductively Coupled Plasma Optical Emission Spectrometry
A solid sampling electrothermal vaporization inductively coupled plasma optical emission spectrometry (ETV-ICP OES) method for determination of As, Cd, Cr, Cu, Mn, Mo, Ni, Pb, Pd, Pt, Rh, Ru and V in pharmaceuticals is proposed. Tricyclic pharmaceuticals were directly analyzed due to their difficult decomposition with acids. Pyrolysis and vaporization temper
J. Braz. Chem. Soc.. Publicado em: 2015-03
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6. Application of Computational fluid dynamic in aluminum refining through pneumatic injection of powders
Magnesium removal process from molten aluminum using particles of silica sand was studied from a hydrodynamic point of view using computational fluid dynamics (CFD). The gas-liquid flow was modeled by a model of the Euler type for both gas and liquid phase transport. Newton´s law of motion was used to describe the subsurface motion of injected solid particl
Mat. Res.. Publicado em: 2014-12
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7. Metodologia para aplicar LES ao craqueamento catalítico fluido em um reator riser industrial / Large eddy simulation application methodology to a fluid catalytic cracking industry reactor
The main objective of this thesis is to propose a methodology in how to apply Large Eddy Simulation (LES) on a unit of catalytic cracking. In order to achieve this, it was proposed an alternative way of constructing the computational mesh, by using quasi-uniform meshes. The proposed meshes were implemented to minimize the computational effort and procedure f
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/09/2012
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8. Simulação de um alimentador Venturi em trecho ascendente no transporte pneumático de sólidos
The radial and axial distributions of coarse solids when fed directly in a riser are unknown, despite this type of feeding is very important for drying and preheating of solids during conveying. In this context, this thesis focused on studying the diluted conveying of coarse solids in a riser that was fed by a Venturi feeder in vertical orientation. Experime
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/08/2012
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9. Estudos de processos avançados em geração termelétrica utilizando leitos fluidizados consumindo biomassa / Advanced studies on power generation processes based on fluidized beds consuming biomass
A study aiming maximizing the efficiency of an advanced combined power generation process has been developed. The process applies a pressurized fluidized bed boiler consuming sugar cane bagasse fed as slurry. The generated steam is diverted to a reheated Rankine cycle while the gas exiting the boiler is directed to a gas turbine process. Many assumptions hav
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/07/2012
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10. ESTUDO EXPERIMENTAL DA COMBUSTÃO DO GLP E GLICEROL RESIDUAL DERIVADO DA PRODUÇÃO DE BIODIESEL EM MEIOS POROSOS RADIANTE / EXPERIMENTAL STUDY OF LPG COMBUSTION OF GLYCEROL AND RESIDUAL DERIVED FROM BIODIESEL PRODUCTION IN RADIANT POROUS MEDIA
The increasing production of biodiesel has caused increased production of residue glycerol. The large amount of glycerin (our glycerol) in the market causes a surplus unusable commercially and industrially, which should give a correct destination. At this point, the porous combustion is characterized by burning within an inert medium, to the pollutants reduc
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/05/2012
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11. Simulação de Reações de craqueamento catalítico e térmico em riser industrial / Simulation catalytic and thermal cracking reactions at industrial riser
The dynamic behavior of a FCC (Fluidized Catalytic Cracking) industrial reactor was simulated employing 3D gas-solid ow models and applying the ten-lumps kinetic model developed by JACOB et al.(1976). The uid-dynamic and the chemical reactions predicted were validated with a set of plant data publicated in literature. Besides, there were added thermal cracki
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/01/2012
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12. AnÃlise do Fluxo de Gases na Camada de Cobertura do Aterro SanitÃrio Municipal Oeste de Caucaia (ASMOC) / Analysis of gas Flow in covering layer of Municipal Landfill West of Caucaia (ASMOC)
The growing human consumption entails a greater generation of waste, which, in turn, must be properly treated and disposed. The storage of waste in landfills produces gas, which if not managed properly will affect the quality of life. The uncontrolled emissions of these gases cause multiple economic, social and environmental impacts, as due to air pollution
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/01/2012