Navegação Engenharias por Autor "Rocha, Luiz Alberto Oliveira"
Resultados 1-16 de 16
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Avaliação numérica do efeito da variação da altura relativa de um conversor de energia das ondas do mar tipo placa submersa
Seibt, Flávio Medeiros; Isoldi, Liércio André; Teixeira, Paulo Roberto de Freitas; Santos, Elizaldo Domingues dos; Rocha, Luiz Alberto Oliveira (2015) [Artigo de periódico]O elevado potencial energético das ondas do mar torna esse recurso uma importante alternativa como fonte de energia limpa e renovável. O sistema de placa horizontal submersa é um tipo de estrutura utilizada como quebra-mar ... -
Numerical analysis including pressure drop in oscillating water column device
Gomes, Mateus das Neves; Santos, Elizaldo Domingues dos; Isoldi, Liércio André; Rocha, Luiz Alberto Oliveira (2015) [Artigo de periódico]The wave energy conversion into electricity has been increasingly studied in the last years. There are several proposed converters. Among them, the oscillatingwater column (OWC) device has been widespread evaluated in ... -
Numerical analysis of an overtopping wave energy converter subjected to the incidence of irregular and regular waves from realistic sea states
Hübner, Ricardo Gabriel; Fragassa, Cristiano; Paiva, Maycon da Silveira; Oleinik, Phelype Haron; Gomes, Mateus das Neves; Rocha, Luiz Alberto Oliveira; Santos, Elizaldo Domingues dos; Machado, Bianca Neves; Isoldi, Liércio André (2022) [Artigo de periódico]The present study aims to evaluate the difference in the fluid-dynamic behavior of an overtopping wave energy converter under the incidence of irregular waves based on a realistic sea state when compared to the incidence ... -
Numerical analysis of the available power in an overtopping wave energy converter subjected to a sea state of the Coastal Region of Tramandaí, Brazil
Cisco, Lenon Audibert; Maciel, Rafael P.; Oleinik, Phelype Haron; Santos, Elizaldo Domingues dos; Gomes, Mateus das Neves; Rocha, Luiz Alberto Oliveira; Isoldi, Liércio André; Machado, Bianca Neves (2022) [Artigo de periódico]The present work proposes a numerical study of an overtopping wave energy converter. The goal of this study is to evaluate the theoretical power that can be converted by an overtopping device subjected to sea waves in the ... -
Numerical analysis of the influence of empty channels design on performance of resin flow in a porous plate
Magalhães, Glauciléia Maria Cardoso; Fragassa, Cristiano; Lemos, Rafael de Lima; Isoldi, Liércio André; Amico, Sandro Campos; Rocha, Luiz Alberto Oliveira; Souza, Jeferson Ávila; Santos, Elizaldo Domingues dos (2020) [Artigo de periódico]This numerical study aims to investigate the influence of I and T-shaped empty channels’ geometry on the filling time of resin in a rectangular porous enclosed mold, mimicking the main operating principle of a liquid resin ... -
A numerical investigation of the resin flow front tracking applied to the RTM process
Souza, Jeferson Ávila; Rocha, Luiz Alberto Oliveira; Amico, Sandro Campos; Vargas, José Viriato Coelho (2011) [Artigo de periódico]Resin Transfer Molding (RTM) is largely used for the manufacturing of high-quality composite components and the key stage during processing is the resin infiltration. The complete understanding of this phenomenon is of ... -
Numerical study and geometrical investigation of an onshore overtopping device wave energy converter with a seabed coupled structure
Barros, Andréia S. de; Fragassa, Cristiano; Paiva, Maycon da Silveira; Rocha, Luiz Alberto Oliveira; Machado, Bianca Neves; Isoldi, Liércio André; Gomes, Mateus das Neves; Santos, Elizaldo Domingues dos (2023) [Artigo de periódico]Studies regarding renewable energy sources have gained attention over recent years. One example is wave energy converters, which harvest energy from sea waves using different operational principles such as oscillating water ... -
Preface to the special issue on engineering flow and design
Miguel, Antonio Ferreira; Rocha, Luiz Alberto Oliveira; Öchsner, Andreas (2015) [Artigo de periódico] -
Proposta de malha Stretched para ser utilizada com o método de imposição de dados discretos como condição de contorno de velocidade prescrita na geração numérica de ondas
Kisner, Elissandro Vaz; Machado, Bianca Neves; Santos, Elizaldo Domingues dos; Rocha, Luiz Alberto Oliveira; Gomes, Mateus das Neves; Isoldi, Liércio André (2019) [Artigo de periódico] -
Simulação numérica e método constructal design aplicados ao estudo de placas perfuradas de material compósito submetidas à flexão
Silva, Caio César Cardoso da; Troian, Sandro Pieta; Rocha, Luiz Alberto Oliveira; Santos, Elizaldo Domingues dos; Real, Mauro de Vasconcellos; Isoldi, Liércio André (2015) [Artigo de periódico]Neste trabalho foi realizado um estudo numérico em placas com perfurações elípticas centralizadas, de material isotrópico e compósito, submetidas à flexão provocada por um carregamento transversal uniformemente distribuído, ... -
Study about buckling phenomenon in perforated thin steel plates employing computational modeling and constructal design method
Helbig, Daniel; Silva, Caio César Cardoso da; Real, Mauro de Vasconcellos; Santos, Elizaldo Domingues dos; Isoldi, Liércio André; Rocha, Luiz Alberto Oliveira (2016) [Artigo de periódico]Perforated steel thin plates are commonly used in structural engineering. Due to their geometric characteristics, these panels can suffer the undesired buckling phenomenon. In this context, the present work associates the ... -
Three-dimensional numerical modeling of RTM and LRTM processes
Isoldi, Liércio André; Oliveira, Cristiano Peres; Rocha, Luiz Alberto Oliveira; Souza, Jeferson Ávila; Amico, Sandro Campos (2012) [Artigo de periódico]Resin Transfer Molding (RTM) is a manufacturing process in which a liquid resin is injected into a closed mold pre-loaded with a porous fibrous preform, producing complex composite parts with good surface finishing. Resin ... -
Two-dimensional control volume modeling of the resin infiltration of a porous medium with a heterogeneous permeability tensor
Souza, Jeferson Ávila; Nava, Marcelo José Anghinoni; Rocha, Luiz Alberto Oliveira; Amico, Sandro Campos (2008) [Artigo de periódico]Resin Transfer Molding (RTM) is a polymer composite processing technique widely used in the aeronautics and automotive sectors. This paper describes the numerical simulation of the RTM process where Darcy’s law was used ... -
Vascular design for reducing hot spots and stresses
Rocha, Luiz Alberto Oliveira; Lorente, Sylvie; Bejan, Adrian (2014) [Artigo de periódico]This paper is a proposal to embed tree-shaped vasculatures in a wall designed such that the wall withstands without excessive hot spots and peak stresses the intense heating and pressure that impinge on it. The vasculature ... -
Verification and Validation of a Methodology to Numerically Generate Waves Using Transient Discrete Data as Prescribed Velocity Boundary Condition
Maciel, Rafael P.; Fragassa, Cristiano; Machado, Bianca Neves; Rocha, Luiz Alberto Oliveira; Santos, Elizaldo Domingues dos; Gomes, Mateus das Neves; Isoldi, Liércio André (2021) [Artigo de periódico]This work presents a two-dimensional numerical analysis of a wave channel and a oscillating water column (OWC) device. The main goal is to validate a methodology which uses transient velocity data as a means to impose ... -
WaveMIMO methodology : numerical wave generation of a realistic sea state
Machado, Bianca Neves; Oleinik, Phelype Haron; Kirinus, Eduardo de Paula; Santos, Elizaldo Domingues dos; Rocha, Luiz Alberto Oliveira; Gomes, Mateus das Neves; Conde, José Manuel Paixão; Isoldi, Liércio André (2021) [Artigo de periódico]This paper presents a methodology that allows the numerical simulation of realistic sea waves, called WaveMIMO methodology, which is based on the imposition of transient discrete data as prescribed velocity on a finite ...