Articles techniques et présentations

Confinement systems for nuclear waste are usually designed to perform and ensure safety in view of all the assumed design basis events, including fires. Considering waste typology and radioactivity, the goal of the confinement system design is to protect the content of the steel drums ... En savoir plus

In this work, the heat transfer characteristics of two heated cylinders of square cross-section immersed in a streaming Bingham plastic medium have been studied. The governing differential equations (continuity, momentum and thermal energy) have been solved numerically over wide range of ... En savoir plus

The four foot diameter class A evaporation pan is used by the scientific community as the standard for determining evaporation rates for a number of purposes. The COMSOL Multiphysics® software provides the necessary tools to adequately develop synthetic estimates of evaporation values ... En savoir plus

Arcam AB has pioneered additive manufacturing using the electron beam melting (EBM) technology which provides a cost efficient and novel way of producing titanium components for the orthopedic and aerospace industries. In the heart of the EBM technology is the electron beam – whose ... En savoir plus

Plasma gasification of biomass is emerging as an efficient way to reduce the carbon foot print of waste management while generating renewable energy. In general, gasification is a process where electromagnetic wave energy is used to heat biomass sufficiently to convert the bio-mass to ... En savoir plus

近年来，一些研究人员基于金属波导的结构色散实现了各向同性的波导超材料，并研究了其各种各样的应用。然而，各向异性的波导超材料却没有得到深入的研究。我们利用金属平板/矩形波导在TEm模式下的结构色散，并在波导内部周期性交替填充两种不同的电介质A和B，并辅以细金属线连接上下金属板，从而可以将整个波导系统等效成二维TM偏振下的各向异性有效介质。我们发现在金属波导内沿着A-B多层介质的两个光轴方向存在两个不同的截止频率。当工作频率处在这两个截止频率范围内时，整个波导系统等效后的有效介质等频率曲线呈现出双曲函数的形式，即实现了双曲型波导超材料；当工作频率在较高的截止频率附近时 ... En savoir plus

The focus of this paper is to study the effect on resonance frequency and power enhancement techniques[1] of piezoelectric MEMS and modeling, design, and optimization of a piezoelectric generator based on a two-layer bending element(Figure 1) using COMSOL Multiphysics. An analytical ... En savoir plus

Adiabatic compression of gases can work as an ignition source and is still one of the main causes of accidents in chemical plants processing tetrafluoroethylene (Reza and Christiansen, 2007). The ignition of tetrafluoroethylene induced by adiabatic compression has been studied ... En savoir plus

In this conference we have brought together a community that is scientifically diverse in an event that allows for inspiring contacts about the use of COMSOL Multiphysics. It is an event to connect with the Spanish and Portuguese COMSOL Multiphysics users and participate in training ... En savoir plus

Calculations were carried out for the water model of the investigated tundish, represented on a scale 1:3. Numerical calculations enable to estimate the fluid flow velocities, pahtlines and other parameters. Calculations were done for two different grids. Based on the results, the flow ... En savoir plus