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 ...

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 ...

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 ...

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 ...

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 ...

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. ...

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 ...

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 ...

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 ...

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) ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...