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
Impact of human activities on the climate is evident, and the recent anthropogenic production and discharge of greenhouse gases into the atmosphere is highest in history. The current climate change have had worldwide influence on human and natural systems for example; global warming, ... 詳細を見る
Humanity is faced with an imminent energy crisis. The exponential growth of the human population and the consequential increase of the required energy on a global scale, the dramatic climate change and the exhaustibility of natural resources combined, force us to strive towards a ... 詳細を見る
The finite element method was used for simulating the dielectric response of polymer matrix dielectric composites with randomly and evenly distributed fillers. The dielectric simulation of the composite materials was conducted using a time harmonic-electric current solver in the AC/DC ... 詳細を見る
Sediment transport in shallow water is of concern in many hydro-ecological problems. Erosion or sedimentation processes are not only relevant in perennial systems as rivers, lakes, reservoirs and coastal regions, but also in ephemeral phenomena like gullies, inundations and floods. ... 詳細を見る
Accurate estimation of rock permeability and porosity play a crucial role in the evaluation of oil and gas reservoirs. This evaluation is, however, challenging in tight formations such as shale due to the slow transition of fluid in such formations with extremely-low permeability. To ... 詳細を見る
In volcanic areas, the presence of heterogeneous materials and high temperatures affect the rheological behaviour of the Earth's crust that calls for considering the anelastic properties of the medium surrounding the magmatic sources. A thermo-mechanical numerical model is performed for ... 詳細を見る
引言 采用相变材料的汽车电池热管理技术已经被广泛研究，利用相变材料的相变潜热对电池进行温控，能有效降低电池高倍率工作条件下的电池温升，提高温度均匀性[1,2]。热管作为一种高导热，紧凑型，形式灵活的换热器件，也被用于电池热管理之中[3,4]。本文针对相变材料与热管相结合的换热结构，对该结构的换热特点，以及对影响该结构换热效果的相关参数进行了数值模拟研究。 COMSOL Multiphysics® 的使用 利用 COMSOL Multiphysics 中的电化学模块和传热模块，建立了二维的电池-热管-相变材料“三明治”结构（图1）。电池部分采用了热 ... 詳細を見る
Viscous fingering is a topic of interest since the beginning of computational fluid dynamics. Here we focus on the classical constellation of miscible displacement, as it has been investigated in Hele-Shaw cells. A temperature or salinity front is entering with a fluid that has a ... 詳細を見る
The present work focuses on modeling a new experimental technique: Scanning Electro-chemical Potential Microscopy (SECPM), which is used to probe the potential profile of the electric double layer (EDL). We used an electrostatic approach to compute the EDL potential measured within the ... 詳細を見る
通过COMSOL 内置的AC/DC模块可以模拟铁磁材料在磁场下的行为，如磁滞回线等。该方法通过求解麦克斯韦方程组来对材料的宏观磁性性质进行刻画。然而若要仿真磁性材料内微观或介观层面上磁矩的动力学行为，则需要使用到微磁学模型（micromagnetics），即求解Landau-Lifshitz-Gilbert方程（LLG方程）。微磁学模型假设磁性材料的磁性由若干个模长守恒的等效磁矩构成，由于交换相互作用、磁偶极相互作用、磁晶各向异性等各种相互作用的存在，我们可以仿真磁性材料内的微观磁结构，如磁畴壁、磁涡旋以及具有拓扑性质的磁斯格明子等 ... 詳細を見る