研究開発におけるマルチフィジックスシミュレーションの具体例
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COMSOL Conference 2024 論文集を見る
A simulation of the behavior of bulk solids continuously flowing through a silo with internal flow feeders has been performed by means of a dissipative hydrodynamic model. The results obtained by these calculations and those found experimentally agree, not only with regard to the ... 詳細を見る
Various types of equation system formulations for modeling two-phase flow in porous media using the finite element method have been investigated. These allow for equation manipulation such that the main differences between the formulations are the dependent variables that are solved ... 詳細を見る
The quaternary mirror (M4) of the Extremely Large Telescope will be equipped with an Adaptive Optics Unit, in order to compensate the effects of the atmospheric turbulence. The highly accurate, closed loop actuation of the thin mirror is provided by 5316 contactless actuators. Their core ... 詳細を見る
Traditionally, municipal sewer and water agencies have relied on acoustic data loggers and closed-circuit television cameras to inspect pipes for leaks. In addition, the same legacy techniques have been used to certify new and rehabilitated pipes as watertight. Unfortunately, visually ... 詳細を見る
气体渗流机制和渗透率演化是预测页岩储层天然气产量的重要因素。本文建立了多场耦合下的基质和裂缝的动态渗透率演化模型，并将其整合到COMSOL求解器中，并利用岩土力学和地下水流模块求解。此外，分析了基质收缩和应力敏感性对渗透率的影响。研究结果表明，孔径增大会增加页岩储层的气体渗流能力。与常规储层相比，由于气体多重流动机制，在小孔（1-10 nm）和低压（0-5 MPa）下，基质表观渗透率与达西渗透率之比高出约1-2个数量级。流动机制主要包括表面扩散，努森扩散和滑移流动。同时基质收缩和应力敏感性的综合影响导致纳米孔闭合，与基质初始渗透率相比，渗透率下降约1个数量级 ... 詳細を見る
In this study we model the sound attenuation properties of a hearing aid earmold tube. The model includes thermoviscous acoustic effects and it couples structural vibrations to the external acoustic field. Moreover, the finite element domain is coupled at two boundaries with an ... 詳細を見る
Finite element modelling of electrical machines usually assumes uniform magnetic properties and loss behaviour throughout the steel laminations. It is well known that manufacturing processes, like the assembly of the machine, deteriorate the properties of the core material. Generally, ... 詳細を見る
Manuel Collet is a member of the Department of Applied Mechanics of the FEMTO-ST Institute. He graduated with a degree in Mechanical Engineering from Ecole Centrale de Lyon in 1992 and obtained his PhD in 1996 about Active control of vibrating structures by mean of semi distributed ... 詳細を見る
Prototype Fast Breeder Reactor (PFBR) has two independent, diverse, fast acting & fail safe shut down systems to achieve the required level of safety & reliability (1). The shut down systems comprises of nine numbers of Control & Safety Rod Drive Mechanisms (CSRDM) & ... 詳細を見る
A two dimensional instationary analysis of the conjugate optical-thermal fields induced in a multilayer thin film structure on a glass substrate by a moving Gaussian laser source is carried out numerically in order to compare back and front laser treatment processes. COMSOL Multiphysics ... 詳細を見る