Articles techniques et présentations

Introduction: Agricultural chemicals such as pesticides are used to protect plants against insects and diseases. In this project, electrostatic spray is investigated with intelligent sensors for efficient use of pesticides. As a part of this project, COMSOL Multiphysics® model was ... En savoir plus

Neste trabalho é analisado o comportamento dos perfis de temperatura e umidade e sua penetração em bobinas de papel submetidas a longos períodos de armazenagem. O modelo considera a transferência simultânea de calor e massa com o efeito Soret, mas sem o efeito Latour. O sistema é fechado ... En savoir plus

A eletroquimioterapia é um tratamento de câncer que utiliza a combinação de agentes quimioterápicos e campos elétricos. A base teórica por trás dessa aplicação é a eletroporação. Esse fenômeno biológico consiste na abertura de poros na membrana celular devido à aplicação de pulsos ... En savoir plus

This work proposes the use of inverse problem techniques in connection with COMSOL to estimate the heat flux and the temperature field on a turning cutting tool in transient regime. The main purpose of the present work is to present the improvements performed in relation to the authors’ ... En savoir plus

Introduction: The main objective of the present work consists in modeling an arc welding heat source to allow predict peak temperature and cooling rate at specific points. The filler metal was deposited on a plate of 32mm thick with no chamfer, in bead on plate configuration, using five ... En savoir plus

A hydraulic loader crane (HLC) is a machine used for cargo handling. It's structural project is complex due to several requirements. In this case, validation with simulation is advantageous. The objective of this paper is to evaluate the stresses of a HLC and compare it with results ... En savoir plus

Additive manufacturing uses 3D printing to build physical parts from CAD-based designs. The technology includes fused deposition modeling (FDM) and selective laser sintering (SLS) methods. 3-D printing is of particular interest for smaller, one-of-a-kind, customizable products. A cube ... En savoir plus

Design and manufacture of thrusters for producing very low thrust force in the range of milli or micro newtons using micronozzles has been actively developed in the last decade. The nature of propellant flow in such micronozzles differs from that of macro nozzles. In micronozzles, ... En savoir plus

Neste trabalho utilizamos o software COMSOL Multiphysics® para resolver a equação de difusão de calor induzida por laser. Está equação é a base de técnicas fototérmicas em especial a técnica de Lente Térmica. Além de resolver a equação de difusão sem o uso das aproximações de amostra ... En savoir plus

Determination of the temperature in liquid foods may be derived by measurements or by modeling. However, the placement of thermocouple probes to record temperature in the container disturbs the flow patterns. For this purpose, Computational fluid-dynamics (CFD) offers a powerful tool for ... En savoir plus