Finite Volume Theory
Mostrando 13-21 de 21 artigos, teses e dissertações.
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13. NON-LINEAR BEHAVIOR AND INSTABILITY OF HYPERELASTIC MEMBRANES AND SHELLS / COMPORTAMENTO NÃO-LINEAR E INSTABILIDADE DE MEMBRANAS E CASCAS HIPERELÁSTICAS
This thesis investigates the large deformations of hyperelastic membranes and shells. The static nonlinear behavior and possible instabilities of the membrane are both analyzed. A detailed experimental analysis was carried out involving cylindrical membranes and shells with different geometries and initial axial forces and the influence of the axial force an
Publicado em: 2003
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14. The spectrum of D-slash in QCD via replicas
This is a short review of the derivation of the spectrum of the Dirac operator in QCD4 in a finite volume V by means of the replica trick. The derivation is nonperturbative in the QCD coupling and it is in agreement with lattice results as well as chiral random matrix theory (ChRMT). Our results hold in the energy scale where chiral symmetry is broken and th
Brazilian Journal of Physics. Publicado em: 2002-12
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15. Flows of Bingham Materials Through Ideal Porous Media: an Experimental and Theoretical Study
The flow of Bingham liquids through porous media has been studied. Experiments have been performed to determine the flow rate / pressure drop relationship for the flow of a grease of Binghamian rheological behavior through an array of rods of circular cross section. The yield stress and plastic viscosity of the grease have been determined with the aid of a c
Journal of the Brazilian Society of Mechanical Sciences. Publicado em: 2002-03
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16. Fluid dynamic modelling and simulation of circulating fluidized bed reactors: importance of the interface turbulence transfer
The main objective of this work is to analyze the importance of the gas-solid interface transfer of the kinetic energy of the turbulent motion on the accuracy of prediction of the fluid dynamic of Circulating Fluidized Bed (CFB) reactors. CFB reactors are used in a variety of industrial applications related to combustion, incineration and catalytic cracking.
Journal of the Brazilian Society of Mechanical Sciences. Publicado em: 2001
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17. OTIMIZAÇÃO DE CASCAS SUBMETIDAS A CARREGAMENTO DINÂMICO / OPTIMIZACIÓN DE CASCAS SOMETIDAS A SOBRECARGA DINÁMICA / OPTIMIZATION OF SHELL STRUCTURES UNDER DYNAMIC LOADS
The main goal of this work is to present a methodology and a computer code which allow the designer, by means of optimization techniques, to obtain efficient shapes of plate and shell structures under linear-elastic behavior and dynamic loads. With this objective, it is used the optimization program SHELLD that includes the geometric modeling, the mesh gener
Publicado em: 2000
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18. Modelagem fenomenologica e simulação bidimensional da fluidodinamica de reatores de leito fluidizado circulante
Circulating Fluidized Bed (CFB) reactors are used in a variety of industrial applications especially related to combustion and catalytic cracking. The fluid dynamic prediction of CFB is fundamental in its development and optimisation. In this work, a computer code for the simulation of the fluid dynamics of Circulating Fluidized Bed Reactors was developed. T
Publicado em: 1998
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19. Kirkwood–Buff theory of molecular and protein association, aggregation, and cellular crowding
An analysis of the effect of a cosolvent on the association of a solute in solution using the Kirkwood–Buff theory of solutions is presented. The approach builds on the previous results of Ben-Naim by extending the range of applicability to include any number of components at finite concentrations in both closed and semiopen systems. The derived expression
American Institute of Physics.
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20. Dressed polyions, counterion condensation, and adsorption excess in polyelectrolyte solutions.
The phenomenon of Manning-Oosawa counterion condensation is given an explicit statistical mechanical and qualitative basis via a dressed polyelectrolyte formalism in connection with the topology of the electrostatic free-energy surface and is derived explicitly in terms of the adsorption excess of ions about the polyion via the nonlinear Poisson-Boltzmann eq
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21. Analogue solution for electrical capacity of membrane covered square cylinders in square array at high concentration.
Analytical solutions of Laplace equations have given the electrical characteristics of membranes and interiors of spherical, ellipsoidal, and cylindrical cells in suspensions and tissues from impedance measurements, but the underlying assumptions may be invalid above 50% volume concentrations. However, resistance measurements on several nonconducting, close-