Generalized Coordinates
Mostrando 1-12 de 19 artigos, teses e dissertações.
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1. Distributional patterns of Aptian-Albian paleoichthyofauna of Brazil and Africa based on Track Analysis
ABSTRACT The Aptian-Albian paleoichthyofauna in Brazil and Africa is quite diverse, yet their geographic patterns still require accounts. This work consists of a panbiogeographical analysis of paleoichthyofauna from Aptian-Albian through track analysis. Geographic coordinates were obtained and converted into paleocoordinates. Individual Tracks (ITs) and Gene
An. Acad. Bras. Ciênc.. Publicado em: 02/03/2017
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2. Pseudo-Analytical Modeling of Tilted-Coil Antennas in Anisotropic Geophysical Formations
Abstract In this paper we present an efficient mode-matching technique to analyze tilted-coil antennas in anisotropic geophysical formations. In this problem, a number of coil antennas with arbitrary relative tilt angle with respect to the symmetry axis are used to radiate electromagnetic fields in a cylindrically layered medium comprised of a metallic mandr
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2017-03
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3. Stress Analysis of Laminated Composite and Sandwich Beams using a Novel Shear and Normal Deformation Theory
AbstractA novel Normal and Shear Deformation Theory (NSDT) for analysis of laminated composite and sandwich beams, taking into account shear deformation as well as normal deformation, is developed. The paper investigates flexural behaviors of thick laminated and sandwich beams under plane stress conditions using NSDT. A generalized displacement-based refined
Lat. Am. j. solids struct.. Publicado em: 2015-07
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4. TÃcnica Split Operator em Coordenadas Generalizadas. / Split Operator Technique in Generalized Coordinates
A mecÃnica quÃntica desempenha um papel fundamental na descriÃÃo e entendimento dos fenÃmenos naturais. De fato, os fenÃmenos que ocorrem em uma escala muito pequena (atÃmica ou sub-atÃmica) nÃo podem ser corretamente explicados fora do contexto da mecÃnica quÃntica. AlÃm disso, existem muitos fenÃmenos em escala macroscÃpica que revelam o comp
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/08/2010
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5. Frequency domain unsteady transonic aerodynamics for flutter and limit cycle oscillation prediction
The purpose of this study was to develop new approaches for predicting transonic flutter and limit cycle oscillations (LCO) using computational methods. The TSD equation is separated into the in-phase and out-of-phase components through a nonlinear harmonic averaging method. It is then solved in the frequency domain to obtain the aerodynamic forcing function
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2010-12
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6. POSITION CONTROL OF A COORDINATES TABLE WITH TWO DEGREES OF FREEDOM / Controle de posição de uma mesa de coordenadas de dois graus de liberdade
This work presents the simulation of a hydraulic system with two degrees of freedom used to position a load on a horizontal plane, using a Generalized Minimum Variance controller (GMV) defined by ISERMANN et al (1992). For this, the Physics laws used to determinate the mathematical linear model that represents the real hydraulic system in study are presented
Publicado em: 2009
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7. Estimação de contrastes de médias de tratamentos, de um experimento em blocos ao acaso, utilizando as análises clássica e espacial / Estimation of treatments means contrasts, in a random blocks model, using the classical and spatial analysis
Not controllable factors is common occur in experiments, they are responsible for the heterogeneity among parcels. Even executing the three experimentation basic principles in the design (repetition, randomization and local control), even so, may have correlation in errors and, therefore, spatial dependence in the area of study. If that autocorrelation struc
Publicado em: 2008
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8. Operational analysis and limitations of the VSI-Based multi-line FACTS controllers
In this paper, the operational analysis and the main limitations of the VSI-based multi-line FACTS controllers, namely: the GIPFC (Generalized Interline Power Flow Controller) and the IPFC (Interline Power Flow Controller), are analyzed. The GIPFC & IPFC are amongst the newest devices within the FACTS technology. By utilizing these devices an enhanced and ne
Sba: Controle & Automação Sociedade Brasileira de Automatica. Publicado em: 2006-06
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9. Generalized Integral Transform Solution for hydrodynamically developing non-Newtonian flows in circular tubes
The Generalized Integral Transform Technique (GITT) is applied to the solution of the momentum equations in a hydrodynamically developing laminar flow of a non-Newtonian power-law fluid inside a circular duct. A primitive variables formulation is adopted in order to avoid the singularity of the auxiliary eigenvalue problem in terms of Bessel functions at the
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2006-03
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10. Study of gas and gas-solid flow in ciclones using computational fluid dynamics technics / "Estudo dos escoamentos gasoso e gas-solido em ciclones pela aplicação de tecnicas de fluidodinamica computacional"
This work is the result of the efforts of the CFD research group of the Chemical Processes Modeling and Simulation Laboratory located at FEQ-UNICAMP to study gas and gas-particle flow in a cyclone. The starting point was to consolidate previous information in cyclone flow using current CFD techniques. Two research lines were applied: the first one has studie
Publicado em: 2005
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11. Distribuição de fases de escoamento a bolhas em duto de secção quadrada atraves de curva de 180º no plano vertical / Phase segregation in bubbly flow in square section duct inside a 180 degree vertical plan curve
The phase segregation in gas-liquid bubbly flow taking place inside a 180 degree plane curve, i.e., with null torsion, is the subject of this work. Both experimental and numerical approaches have been performed. Thus, aspects as the influence of intensity of centrifugal field on phase segregation, the role played by turbulence on phase segregation and detail
Publicado em: 2004
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12. Metodo de solução para o estudo da influencia da estrutura de suporte no comportamento dinamico de maquinas rotativas
The analysis of the behavior of foundation and its influence on the whole system response, rotor-bearings-foundation, is of a great importance to investigate the dynamic response of these systems. Modal analysis procedures have been strongly developed in the last decades and have become important tools of analysis in engineering problems that involve rotatin
Publicado em: 2001