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Sehen Sie sich die Kollektion für die COMSOL Conference 2024 an
The present research work aims to present thermal analysis of Electrical Discharge machining. During its machining process a large amount of heat is generated due to sparking phenomena, It has been assumed that heat distribution follows the Gaussian Distribution function. As such a ... Mehr lesen
Multi-physics simulations of the evolution of cure induced stresses in a viscoelastic thermoset polymeric resin are presented. The viscoelastic material model is implemented with a relaxation spectrum with 34 relaxation time constants. The trends in viscoelastic stresses at different ... Mehr lesen
Charged particle beam manipulation requires magnetic dipoles for steering and quadrupoles for focusing. Conventional magnets are currently used leading to very large and heavy systems. Miniaturization of the optic magnets would enable the development of more affordable systems and ... Mehr lesen
To investigate the thermal-mechanical behavior of oceanic transform faults, we calculate 3-D steady-state incompressible mantle flow and heat transport using COMSOL Multiphysics. Our model incorporates a nonlinear viscous rheology with a visco-plastic approximation to simulate ... Mehr lesen
This paper presents the design and analysis of a high power radial flux Brushless DC motor for electro-mechanical actuation system. The motor is used for driving an electro-mechanical actuator of 20 ton capacity. Surface mounted, radially magnetized permanent magnet design is mostly ... Mehr lesen
Many scientific instruments are based on high vacuum equipment with a gas pressure maintained in the order of 1 Pa or below. The gas flow in the low pressure limit, called the molecular flow regime, is a case of transport with zero viscosity. The ability to solve an integral equation on ... Mehr lesen
Surface discharge at the oil-pressboard interface has been classified as the most dangerous fault condition in power transformer because it results in catastrophic failure under normal operating conditions and difficult to be detected. In order to understand the physical features of ... Mehr lesen
Design and safety analyses are underway to convert the High Flux Isotope Reactor (HFIR) at the Oak Ridge National Laboratory (ORNL) from a high-enriched uranium (HEU) fuel to a low-enriched uranium (LEU) fuel. The primary constraint for the project is that the overall fuel plate ... Mehr lesen
Murphy and Good general theory for electron emission from metal surfaces was used to predict the field-emission capabilities of ideal arrays of vertically aligned carbon nanotubes (VACNT). The Nottingham effect was taken into account in order to explain experimental observation of a ... Mehr lesen
随着我国国民经济的持续高速发展，生活与生产的用电量越来越大，电力行业的规模日益增大。电力设备在不正常工作时，大多会产生电弧电晕，通过检测电晕电弧等目标，就可以获知电力系统设备的损害程度。然而，目前并没有对真实的电弧电晕目标进行非光子计数方式的定量化研究。本文作者研制了一套紫外外波段的面阵成像探测系统，对实验室人工制造的高电压电弧电晕目标进行了相关的分析与实验研究。 利用 COMSOL Multiphysics® 的等离子体物理场接口的 DC 放电接口，对实验所用的天梯仪器的放电行为建模，分子碰撞数据选择大气压下的空气模型，对电晕放电辉光主要贡献的成分N2+ ... Mehr lesen