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
With the advent of MEMS, transdermal drug delivery has been developed to increase skin permeability for drug transport. Various microneedle structures have been analyzed theoretically as well as through simulation using COMSOL Multiphysics®. Then computational fluid dynamics has been ... 詳細を見る
In this work, a MEMS low-g accelerometer with three sensitive directions is designed for health monitoring applications. The accelerometer may have different sensitivity in different axes. The proof-mass of the device is suspended by four serpentine springs, and the comb drive structure ... 詳細を見る
Uncertainty in COMSOL Multiphysics® software simulations due to (a) model parameter uncertainties and (b) mesh-induced truncation errors, is estimated using a design-of-experiments approach [1, 2, 3], and a nonlinear least squares logistics fit method [4, 5], respectively. Examples to ... 詳細を見る
The Swedish Nuclear Fuel and Waste Management Co (SKB) is responsible for final disposal of spent fuel and radioactive waste. SKB operates SFR, an underground waste repository in crystalline rock. The evolution of groundwater flow within the repository needs to be estimated considering ... 詳細を見る
In a magnetic resonance imaging (MRI) system, it is necessary to excite the nuclei of a patient into coherent precession for imaging. This requires a coupling between the nuclei and a source of radio frequency (RF) power using a transmitter. To receive a meaningful signal, we also need ... 詳細を見る
Electronic devices produce a very high rate of specific heat with respect to their dimensions. Exceeding in maximum safe operating temperature means strong reduction of efficiency, reliability and lifetime. In addition, electronic devices are subjected to periodical thermal loading. ... 詳細を見る
Logging-while-drilling (LWD) acoustic transducers provide real-time data about the geologic and geophysical properties of the borehole that ensure safety margins and optimize completion. It is important to understand what causes the different resonance modes in the transmitter and obtain ... 詳細を見る
干热岩致密且天然裂缝发育，能否有效激活天然裂缝、提高储层连通性是高效开发干热岩地热能的关键。流-固-热耦合作用下的裂缝剪切滑移机制是其关键科学问题之一。本文基于 COMSOL 多物理场计算平台，建立干热岩压裂裂缝剪切滑移模型，综合考虑热储层与注入流体换热、原地应力、缝内净压力、裂缝面摩擦系数等原位参数，得到了裂缝剪切滑移加速度与位移、速度与位移、位移与时间以及摩擦力与位移的变化规律。同时研究了材料属性、法向加载路径、切向载荷和摩擦系数等因素对极限滑移距离的影响规律。结果表明：裂缝极限滑动位移（极限滑动距离）受岩石弹性模量、裂缝面摩擦系数 ... 詳細を見る
iCP (Nardi et al, 2014) is a software that couples two standalone simulation programs: COMSOL Multiphysics® and PHREEQC (Parkhurst & Appelo, 2013). The tool is ideal for applying multiphysics and geochemistry in Earth Sciences. Flexibility of the two coupled codes result in an ... 詳細を見る
A dual axis MEMS seismometer targeted for building monitoring system has been simulated for a full scale of ±5g acceleration. The design uses the capacitive effect for vibration sensing. This comb drive capacitive MEMS seismometer consists of 8 springs with two proof masses. The device ... 詳細を見る