Articles techniques et présentations

Additive manufacturing gathers technologies where near net shape components are produced by depositing successive layers of materials. Among these technologies, the Layer Beam Melting (LBM) process – often referred to as Selective Laser Melting (SLM) – is garnering industrial interest, ... En savoir plus

INTRODUCTION: The Dirac equation is employed in particle physics and historically gave the first combined unification of quantum mechanics and relativity theory by introducing a four component wave function Ψi. This wave function described the behavior of fermion type particles (e.g. ... En savoir plus

As a part of the Pan-Canadian framework for clean growth, Canada is intent on meeting its 2030 emission targets for which 17% of Canada’s total Green House Gas emissions come from buildings. Given this challenge, emphasis is being placed on developing building designs having greatly ... En savoir plus

A dynamic mathematical model, based on physical and transport properties and mass and energy balances, was developed for the simulation of unsteady convective drying of agricultural products (fruits and vegetables) in static bed conditions. The model utilizes water sorption isotherm ... En savoir plus

With every passing decade, the issue of noise pollution became worse in urban areas and the usefulness of noise barriers increased. With the increase in demand came the challenge of improving the effectiveness of barriers. To facilitate this, extensive studies have been conducted ... En savoir plus

Binder jet printing (BJP) is one of the additive manufacturing methods that are being widely implemented as an efficient alternative for casting and machining in the automotive industry. Sintering densification of the as-printed part (green part) adds uncertainty and possible undesirable ... En savoir plus

Microfluidics-based mixing has been widely used in various areas such as chemical engineering, biomedical engineering and materials science. The micromixer can be strategies into two categories as passive and active method depending on the mixing principle. Magnetic mixing integrated ... En savoir plus

Laser-based powder bed fusion (LPBF) is a promising additive manufacturing technology, where metallic parts are produced in a layer-wise manner. At each step, a rapid-moving laser irradiates and subsequently melts predefined zones of a relatively thin layer of fine spherical metal ... En savoir plus

COMSOL Multiphysics software, when properly configured, can readily solve modeling problems in the laminar flow regime using the standard Navier-Stokes equations or in the fully turbulent flow regime using the kappa-epsilon model. Failure to solve a particular model is typically ... En savoir plus

城市内超高层建筑物的高度和密度的快速增加会影响城市风环境，城市风环境与人身健康、社会经济息息相关，然而目前缺乏针对超高层建筑物的高度和密度对风环境影响的定量研究。本文利用COMSOL Multiphysics® 5.2版本CFD模块中的湍流k-ε接口，采取控制变量法，数值模拟超高层建筑物不同高度和密度分别对应的城市风场，从高空风噪、阻挡作用、城市通风三个方面综合评价风环境质量，探索形成良好风环境的高度密度参数组合。研究结果表明，相邻两栋超高楼之间的高宽比小于0.89时，高空风噪、阻挡作用、城市通风都能较好地符合环境要求。 En savoir plus