Finite Volume
Mostrando 1-12 de 268 artigos, teses e dissertações.
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1. Optimization Techniques and Mathematical Modeling Applied to Reluctance Motors
Abstract The present work aims at the application of different optimization strategies in the electromagnetic analysis of the Variable Reluctance Motor (VRM) through Finite Element (FE) simulation. Two case studies are investigated: the first one aims to optimize the geometry and electrical characteristics of windings of a single-phase VRM 6/6, minimizing co
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2022
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2. Análise de Estabilidade e de Consistência da Equação de Difusão Anômala com Fluxo Bimodal Empregando o Método de Volumes Finitos
RESUMO. A análise de consistência e as condições de estabilidade da equação de difusão com fluxo bimodal são tratadas neste trabalho. Foram, também, apresentados diversos detalhes sobre a maneira como a equação diferencial foi discretizada no âmbito do método de Volumes Finitos incluindo a forma que as condições de contorno foram definidas nas
TEMA (São Carlos). Publicado em: 20/12/2019
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3. Numerical Simulation of a Pitching Airfoil Under Dynamic Stall of Low Reynolds Number Flow
ABSTRACT: In this research, viscous, unsteady and turbulent fluid flow is simulated numerically around a pitching NACA0012 airfoil in the dynamic stall area. The Navier-Stokes equations are discretized based on the finite volume method and are solved by the PIMPLE algorithm in the open source software, namely OpenFOAM. The SST k - ω model is used as the tur
J. Aerosp. Technol. Manag.. Publicado em: 14/11/2019
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4. Study of the Moisture Absorption in Polymer Composites Reinforced with Vegetal Fiber Using Langmuir’s Model
This work aims to numerically study the moisture absorption in polymer composites reinforced with vegetal fiber, using the diffusive model of Langmuir, which considers the existence of water molecules inside the material free to diffuse and adsorb at the capillaries walls, in the solid. A three-dimensional and transient mathematical modelling to describe the
Mat. Res.. Publicado em: 11/11/2019
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5. Effect of α/β Forging on Microstructure and Texture Inhomogeneity in a Ti-1023 Forged Disk
The microstructure and texture distribution of a Ti-1023 forged disk were investigated by scanning electron microscopy and synchrotron-based high-energy X-ray diffraction. The finite element method was used to simulate temperature and strain distribution in order to investigate the relationship of the α/β forging process with microstructure and texture dis
Mat. Res.. Publicado em: 30/09/2019
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6. Influência de interfases sobre a condutividade térmica efetiva de compósitos periódicos reforçados por fibras
RESUMO Os materiais compósitos comumente apresentam delgadas regiões ou interfases localizadas entre a matriz e as inclusões. Estas interfases têm influência no comportamento efetivo do compósito. Em diversas aplicações, os compósitos estão sujeitos a variações significativas de temperatura e, consequentemente, a condutividade térmica efetiva de
Matéria (Rio J.). Publicado em: 16/09/2019
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7. On-load Back-EMF Optimization Based on the Back-EMF MST Method and Parametric Optimization
Abstract This paper proposes an optimal design for a surface mounted permanent magnet synchronous machine (SM-PMSM) based on parametric optimization process to reduce the on-load Back-EMF distortions caused by an increase in the electromagnetic load and in the saturation. Unlike conventional methods described in the literature, the optimization approach prop
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 12/09/2019
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8. Study of epoxy composites and sisal fibers as reinforcement of reinforced concrete structure
Resumo A aplicação de reforço estrutural tem apresentado crescimento significativo nos dias atuais. O desenvolvimento de novos materiais para tal finalidade tem despertado o interesse de muitos pesquisadores. O presente trabalho teve por objetivo avaliar a viabilidade técnica da produção e aplicação de polímeros reforçados com fibras vegetais (PRFV
Rev. IBRACON Estrut. Mater.. Publicado em: 20/05/2019
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9. Influence of the Micromechanics Models and Volume Fraction Distribution on the Overall Behavior of SiC/Al Functionally Graded Pressurized Cylinders
Abstract The assessment of the differences in results obtained from various micromechanics homogenization schemes, as well as the implications of assuming different volume fraction profiles was carried out in the present work. The functionally graded composite chosen for the analysis was Al-SiC and comparisons were made in terms of stress and strain distribu
Lat. Am. j. solids struct.. Publicado em: 08/04/2019
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10. Two-Dimensional Numerical Model of the Fracture Process in Steel Fibre Reinforced Concrete with the Continuum Strong Discontinuity Approach and Functional Data Analysis
Abstract This paper presents the formulation of a two-dimensional numeri-cal model able to describe the fracture process in structural mem-bers of steel fibre reinforced concrete (SFRC) from the volume ratio of the fibres and the mechanical properties of the compo-nents: a concrete matrix and a set of steel fibres with a random orientation. The relationship
Lat. Am. j. solids struct.. Publicado em: 08/04/2019
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11. Improvement of Airfoils Aerodynamic Efficiency by Thermal Camber Phenomenon at Low Reynolds Number
ABSTRACT: In this research, viscous, laminar and steady flow around symmetric and non-symmetric airfoils is simulated at Low Reynolds Number (LRN). Navier-Stokes (N-S) equations are discretized by Finite Volume Method (FVM) and are solved by the SIMPLE algorithm in an open source software, namely OpenFOAM. The main objective of this paper is the introduction
J. Aerosp. Technol. Manag.. Publicado em: 01/11/2018
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12. An enriched meshless finite volume method for the modeling of material discontinuity problems in 2D elasticity
Abstract A 2D formulation for incorporating material discontinuities into the meshless finite volume method is proposed. In the proposed formulation, the moving least squares approximation space is enriched by local continuous functions that contain discontinuity in the first derivative at the location of the material interfaces. The formulation utilizes sp
Lat. Am. j. solids struct.. Publicado em: 26/04/2018