Numerical Methods In Solidification
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Numerical Analysis of Twin-Roll Casting of Strips With Profiled Cross-Section
The relatively high production costs of innovative materials with tailored properties such as Tailor Welded Blanks, Patchwork Blanks, Tailor Heat Treated Blanks and Tailor Rolled Blanks are responsible for a growing interest in new cost-effective production methods. One of the promising energy-saving and environmental friendly technologies for the production
Mat. Res.. Publicado em: 16/04/2018
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2. Predicting Secondary-Dendrite Arm Spacing of the Al-4.5wt%Cu Alloy During Unidirectional Solidification
Mechanical properties and performance of metallic materials depend on their microstructures. In order to develop engineering materials that match prescribed criteria and to enable design with multifunctional materials, it is essential to be able to predict their microstructural patterns, such as size, shape, and spacing of the dendritic structures observed i
Mat. Res.. Publicado em: 24/11/2016
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3. Simulation of the Microstructural Evolution of Pure Material and Alloys in an Undercooled Melts via Phase-field Method and Adaptive Computational Domain
The phase-field methods were developed mainly for studying solidification of pure materials, being then extended to the solidification of alloys. In spite of phase-field models being suitable for simulating solidification processes, they suffer from low computational efficiency. In this study, we present a numerical technique for the improvement of computati
Mat. Res.. Publicado em: 2015-06
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4. "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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5. Physical and numerical simulations of the rotary continuous casting process / Simulação fisica e numerica do processo de lingotamento continuo rotativo
The present study describes the development of a static experimental set-up representing the solidification system of a Rotary Continuous Caster, as part of a metholology, which connected to a numerical model permits to determine transient global metal/mold heat transfer coefficients along solidification. By using this methodology the influence of air gap fo
Publicado em: 2005
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6. Desenvolvimento e avaliação de um metodo semi-continuo de fusão zonal e sua aplicação na recuperação de indio / Development and evaluation of a semi-continuous zone melting method and its application on indium recovery
The zone refining process consists of the movement of one or more melted zones along the bar of the material which purification is desired. This purification process presents as variables: solidification rate, thermal gradient in front of the solid/liquid interface, convection imposed to the liquid and relative size of melted zone. The present work aims to i
Publicado em: 1997
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7. Estudo teorico e experimental do movimento da frente de solidificação por super-resfriamento de um liquido no interior de um duto
In order to investigate the solidification process involving the phase change of laminar flow submitted to superfreezing, a theoretical and experimental study is developed. An alternative analytical and numerical unsteady model with temperature-dependent physical properties for the solid region is proposed, based upon the energy balance equation in the solid
Publicado em: 1990