Multiphase Flows
Mostrando 1-12 de 19 artigos, teses e dissertações.
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1. Design and analysis of different models of microfluidic devices evaluated in Enhanced Oil Recovery (EOR) assays
ABSTRACT Microfluidic devices are a new platform for Enhanced Oil Recovery (EOR) assays. The application of Colloidad Dispersion Gels (CDG) injection method has been proposed in recent years. However, the mechanism of oil recovery enhancement has not been completely elucidated. Its purpose is to mobilize oil by decreasing the permeability of channeled zones.
Matéria (Rio J.). Publicado em: 19/07/2018
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2. On the application of self-organizing neural networks in gas-liquid and gas-solid flow regime identification
One of the main problems associated with the transport and manipulation of multiphase flow is the existence of flow regimes, which have a strong influence on important parameters of operation. An example of this occurs in gas-liquid chemical reactors in which maximum coefficients of reaction can be attained by keeping a dispersed-bubbly flow regime to maximi
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2010-03
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3. Central schemes for porous media flows
We are concerned with central differencing schemes for solving scalar hyperbolic conservation laws arising in the simulation of multiphase flows in heterogeneous porous media. We compare the Kurganov-Tadmor (KT) [3] semi-discrete central scheme with the Nessyahu-Tadmor (NT) [27] central scheme. The KT scheme uses more precise information about the local spee
Computational & Applied Mathematics. Publicado em: 2009
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4. Experimental and numerical study of spouted bed fluif dynamics
Spouted beds, originally invented in Canada by Mathur and Gishler (1955) as an alternative to fluidized beds for handling coarse particles, are now widely studied in a variety of physical operations, such as drying, coating and granulation. In this work the particle velocity, minimum spouting flow rate and characteristic fluid-dynamic curves of the spouted b
Brazilian Journal of Chemical Engineering. Publicado em: 2008-03
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5. Tomografia de escoamentos multifásicos por sensoriamento elétrico - desenvolvimento de algoritmos genéticos paralelos para a solução do problema inverso / Multiphase flow tomography by electrical sensing - development of parallel genetic algorithms for the solution of the inverse problem
A tomografia por sensoriamento elétrico representa uma técnica de grande potencial para a otimização de processos normalmente associados às indústrias do petróleo e química. Entretanto, o emprego de técnicas tomográficas em processos industriais envolvendo fluidos multifásicos ainda carece de métodos robustos e computacionalmente eficientes. Ness
Publicado em: 2008
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6. Heavy-ion collisions at LHC in a multiphase transport model
Using a multiphase transport (AMPT) model that includes scatterings in both initial partonic and final hadronic matters as well as the transition between these two phases of matter, we make predictions on the rapidity distributions and transverse momentum spectra of various hadrons, their elliptic flows, and two-pion correlation functions in ultra-relativist
Brazilian Journal of Physics. Publicado em: 2007-09
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7. Detailed Two-Dimensional Numerical Analysis of Multiphase Flows / Análise numérica detalhada de escoamentos multifásicos bidimensionais
The mathematical modeling of multiphase flows involves the interaction between deformable and moving geometries with the fluid in which they are dispersed (immersed). This kind of interaction is present in many practical applications. A common approach to handle these problems is the so called Front-Tracking/Front-Capturing Hybrid Methods. This methodology c
Publicado em: 2007
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8. Detailed Two-Dimensional Numerical Analysis of Multiphase Flows / AnÃlise numÃrica detalhada de escoamentos multifÃsicos bidimensionais
The mathematical modeling of multiphase ows involves the interaction between deformable and moving geometries with the uid in which they are dispersed (immersed). This kind of interaction is present in many practical applications. A common approach to handle these problems is the so called Front-Tracking/Front-Capturing Hybrid Methods. This methodology consi
Publicado em: 2007
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9. Estudo experimental e de simulação da fluidodinâmica de um leito de jorro com tubo Draft
The spouted bed has been used in several processes as drying, granulation, catalytic polymerization, residues treatment and materials coating. This application is due to the excellent fluid-particle contact and to the characteristics of the solids circulation. In spite of its extensive application, the spouted bed has some scale-up limitations, so its necess
Publicado em: 2007
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10. Estudo experimental e de simulaÃÃo da fluidodinÃmica de um leito de jorro com tubo Draft
The spouted bed has been used in several processes as drying, granulation, catalytic polymerization, residues treatment and materials coating. This application is due to the excellent fluid-particle contact and to the characteristics of the solids circulation. In spite of its extensive application, the spouted bed has some scale-up limitations, so itâs nece
Publicado em: 2007
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11. "Simulations of 3D two-phase flows using adaptive methods and phase field models" / "Simulações de escoamentos tridimensionais bifásicos empregando métodos adaptativos e modelos de campo fase"
This is the first work that introduces 3D fully adaptive simulations for a phase field model of an incompressible fluid with matched densities and variable viscosity, known as Model H. Solving numerically the equations of this model in meshes locally refined with AMR technique, we simulate computationally tridimensional two-phase flows. Phase field models of
Publicado em: 2007
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12. Modelagem multifasica Euleriana-Euleriana para simulação numerica de ciclones / Eulerian-Eulerian approach for numerical simulation of cyclones
In this work it is presented the computational code CYCLO, which is a program developed specifically to predict the dynamic behavior of the gas-solid flow in cyclones. The cyclones have been used extensively in many industries for a long time for separating the particles from gaseous streams. Since the beginning of the industrialization until the present tim
Publicado em: 2007