Browsing EE - Artigos Publicados em Periódicos by Author "Isoldi, Liércio André"

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  • 3D numerical analysis about the shape influence of the hydro-pneumatic chamber in an oscillating water column (owc). 

    Isoldi, Liércio André; Grimmler, Juliana do Amaral Martins; Letzow, Max; Souza, Jeferson Avila; Gomes, Mateus das Neves; Rocha, Luis Alberto Oliveira; Santos, Elizaldo Domingues dos (2015)
    The oceans represent one of the major energy natural resources, which potentially can be used to supply the World energy demand. In the last decades some devices to convert the wave ocean energy into electrical energy have ...
  • Algebraic rectilinear model for multilayer resin transfer molding injection 

    Oliveira, Cristiano Peres; Souza, Jeferson Avila; Isoldi, Liércio André; Amico, Sandro Campos (2013)
    An analytical model for the multilayer rectilinear injection applied to the RTM process has been developed. The model takes into account the permeability in both in-plane (Kxx and Kyy ) and transverse (Kzz ) directions of ...
  • An experimental study on the use of earth-air heat exchangers (EAHE) 

    Vaz, Joaquim; Sattler, Miguel Aloysio; Brum, Ruth da Silva; Santos, Elizaldo Domingues dos; Isoldi, Liércio André (2014)
    The thermal potential of Earth-Air Heat Exchangers (EAHE) is experimentally investigated for a placementin Viamão, city located in the south of Brazil. Three independent ducts are buried in the soil, ducts A and B are ...
  • Análise numérica da dinâmica de cabos altamente extensíveis 

    Isoldi, Liércio André; Santos, Maria Angela Vaz dos (2003)
    A mecânica de cabos altamente extensíveis deve ser estudada numericamente. Para isso, implementamos computacionalmente a solução de um sistema de equações capaz de descrever o movimento de cabos extensíveis em ruptura. Foi ...
  • Análise numérica de uma placa submersa como quebra mar e conversor de energia das ondas 

    Seibt, Flávio Medeiros; Couto, Eduardo Costa; Teixeira, Paulo Roberto de Freitas; Santos, Elizaldo Domingues dos; Isoldi, Liércio André (2013)
    Este artigo apresenta um modelo computacional bidimensional desenvolvido para análise do quebra mar tipo placa submersa. O modelo desenvolvido utiliza os códigos comerciais GAMBIT e FLUENT. O escoamento da mistura água-ar ...
  • Análise numérica do comportamento mecânico sob flexão de placas finas de material compósito laminado reforçado por fibras 

    Helbig, Daniel; Real, Mauro de Vasconcellos; Rocha, Luiz Alberto Oliveira; Santos, Elizaldo Domingues dos; Isoldi, Liércio André (2013)
    A crescente necessidade de estruturas com propriedades mecânicas superiores impulsiona o desenvolvimento de novos tipos de materiais, dentre os quais se destacam os materiais compósitos laminados reforçados por fibras. ...
  • Comparação dos métodos VOF e FE/CV aplicados à solução de problemas de RTM 

    Oliveira, Cristiano Peres; Souza, Jeferson Avila; Amico, Sandro Campos; Isoldi, Liércio André; Silva, Rafael Diego Sonaglio da (2011)
    A moldagem por transferência de resina (RTM) é um processo amplamente utilizado na produção de compósitos poliméricos com as mais diferentes geometrias. É um processo de infusão de resina em um molde fechado e preenchido ...
  • Uma comparação qualitativa numérica entre condensadores evaporativos de grande e pequena escala. 

    Acunha Junior, Ivoni Carlos; Galarça, Marcelo Moraes; Porte, Anderson Favero; Santos, Elizaldo Domingues dos; Isoldi, Liércio André; Schneider, Paulo Smith (2012)
    Este artigo tem por objetivo avaliar qualitativamente os resultados numéricos obtidos utilizando-se CFD para modelagem de condensadores evaporativos. Compara-se resultados da literatura com aqueles obtidos a partir de um ...
  • Computational modeling applied to the study of wave energy converters (WEC) 

    Seibt, Flávio Medeiros; Letzow, Max; Gomes, Mateus das Neves; Souza, Jeferson Avila; Rocha, Luiz Alberto Oliveira; Santos, Elizaldo Domingues dos; Isoldi, Liércio André (2014)
    The employment of numerical methods to solve engineering problems is a reality, as well as, the worldwide concern about the need of renewable and alternative energy sources. Thus, this work presents a computational model ...
  • Computational modeling of a regular wave tank 

    Gomes, Mateus das Neves; Olinto, Cláudio Rodrigues; Rocha, Luiz Alberto Oliveira; Souza, Jeferson Avila; Isoldi, Liércio André (2009)
    This paper presents two different numerical methodologies to generate regular gravity waves in a wave tank. We performed numerical simulations of wave generation through the FLUENT® package, using the Volume of Fluid (VOF) ...
  • Computational modeling of RTM and LRTM processes applied to complex geometries 

    Porto, Joseane da Silva; Letzow, Max; Santos, Elizaldo Domingues dos; Amico, Sandro Campos; Souza, Jeferson Avila; Isoldi, Liércio André (2012)
    Light Resin Transfer Molding (LRTM) is a variation of the conventional manufacturing process known as Resin Transfer Molding (RTM). In general terms, these manufacturing processes consist of a closed mould with a preplaced ...
  • Constructal design aplicado a placas com furos elípticos sob flambagem. 

    Correia, Anderson Luis Garcia; Silveira, Thiago da; Silva, Caio César de Castro da; Rocha, Luiz Alberto Oliveira; Real, Mauro de Vasconcellos; Santos, Elizaldo Domingues dos; Isoldi, Liércio André (2013)
    Placas são elementos amplamente empregados na engenharia estrutural. Em muitas situações é necessária a existência de perfurações nestas placas. Sabe-se ainda que elementos estruturais esbeltos submetidos a cargas de ...
  • Constructal design applied to the elastic buckling of thin plates with holes 

    Rocha, Luiz Alberto Oliveira; Isoldi, Liércio André; Real, Mauro de Vasconcellos; Santos, Elizaldo Domingues dos; Correia, Anderson Luis Garcia; Lorenzini, Giulio; Biserni, Cesare (2013)
    Elastic buckling is an instability phenomenon that can occur if a slender and thin plate is subjected to axial compression. An important characteristic of the buckling is that the instability may occur at a stress level ...
  • Constructal design of a tubular array subjected to forced convection. 

    Pedrotti, Vagner Andrade; Souza, Jeferson Avila; Santos, Elizaldo Domingues dos; Isoldi, Liércio André (2015)
    In this work a tubular array (four tubes) subjected to a transverse forced flow is analyzed in terms of thermal performance. Taking into account that there are two main assembles usually used in heat exchanger ...
  • Constructal design of a vortex tube for several inlet stagnation pressures 

    Marques, Crístofer Hood; Isoldi, Liércio André; Santos, Elizaldo Domingues dos; Rocha, Luiz Alberto Oliveira (2012)
    The present paper shows a numerical study concerned with the geometrical optimization of a vortex tube device by means of Constructal Design for several inlet stagnation pressures. In the present study, it is evaluated a ...
  • Constructal design of a x-shaped cavity cooled by convection 

    Link, Fernanda Bichet; Rocha, Luiz Alberto Oliveira; Santos, Elizaldo Domingues dos; Isoldi, Liércio André (2014)
    This paper applies Constructal design to study the geometry of a X-shaped cavity that penetrates into a solid conductive wall. The objective is minimizing the dimensionless maximal excess of temperature between the solid ...
  • Constructal design of convective cavities inserted into a cylindrical solid body for cooling 

    Lorenzini, Giulio; Estrada, Emanuel da Silva Diaz; Santos, Elizaldo Domingues dos; Isoldi, Liércio André; Rocha, Luiz Alberto Oliveira (2015)
    This work applies Constructal design to study numerically the geometry of cavities bathed by a fluid with constant heat transfer coefficient that are intruded into a cylindrical solid body. The objective is to minimize the ...
  • Constructal design of isothermal x-shaped cavities 

    Lorenzini, Giulio; Biserni, Cesare; Link, Fernanda Bichet; Santos, Elizaldo Domingues dos; Isoldi, Liércio André; Rocha, Luiz Alberto Oliveira (2014)
    This paper applies constructal design to study the geometry of a X-shaped cavity that penetrates into a solid conducting wall. The objective is to minimize the maximal dimensionless excess of temperature between the solid ...
  • Constructal design of T-shaped assemblies of fins cooling a cylindrical solid body 

    Lorenzini, Giulio; Biserni, Cesare; Corrêa, Roberta de Lima; Santos, Elizaldo Domingues dos; Isoldi, Liércio André; Rocha, Luiz Alberto Oliveira (2014)
    This paper considers the numerical optimization of a T-shaped assembly of fins cooling a cylindrical solid body. The objective is to minimize the maximum excess of temperature between the solid cylindrical body and the ...
  • Constructal design of T-shaped cavity for several convective fluxes imposed at the cavity surfaces 

    Lorenzini, Giulio; Biserni, Cesare; Link, Fernanda Bichet; Isoldi, Liércio André; Santos, Elizaldo Domingues dos; Rocha, Luiz Alberto Oliveira (2013)
    The purpose here is to investigate, by means of the constructal principle, the influence of the convective heat transfer flux at the cavity surfaces over the optimal geometry of a T-shaped cavity that intrudes into a solid ...