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
Lithium ion battery safety problem has attracted the whole world’s attention essentially after the explosion of Samsung Note 7. This work mainly deals with the study of the generation, characteristics and prevention measures of the battery fire. Firstly, the heat generation rate of ... 詳細を見る
为满足电动汽车对长续航和快充电的需求，提升锂离子电池的能量密度和快充性能至关重要。锂离子电池在快速充放电过程中的电极结构退化问题已成为制约其性能提升的关键瓶颈。尤其在高倍率循环条件下，电极活性颗粒内部会因锂离子浓度梯度和相变引发的非均匀体积膨胀而产生显著的机械应力，进而导致微裂纹的萌生与扩展。本研究建立了耦合锂离子扩散、相变、应力演化及断裂过程的COMSOL模型，系统研究了单晶电极颗粒、二级电极颗粒和厚电极的断裂行为。在单晶颗粒尺度，建立了耦合锂扩散、相变、应力与断裂的相场模型。研究发现脱锂路径具有取向依赖性，导致非均匀相变与晶格失配应力 ... 詳細を見る
Vehicles with battery as energy storage fascinate more and more people. Meanwhile, more questions are surfaced – How to ensure a safe operation of the battery package? How long could the cycle life of a battery package reach? Can a battery package be operated in any environmental ... 詳細を見る
Li-ion battery is being used as power source for various applications. Smart battery diagnostics is essential for creating a better control over the energy storage system and cycle life of a Li-ion battery. It is especially required for real time applications, where more power and energy ... 詳細を見る
With the Creation, roll-out, and maintenance of COMSOL Simulation apps, the role of simulation engineers and departments is expanding to include responsibilities similar to those of software developers. Within our department, we have undergone this transformation and will share the key ... 詳細を見る
One of the most noticeable effects in loss of performance and capacity of thermal systems is produced by altitude. This causes that the density of a compressible fluid and the atmospheric pressure are considerably reduced, causing a decrease in electrical power and thermal systems. Given ... 詳細を見る
Dedicated work in modeling, simulation and design optimization of Lithium-ion Battery (LIBs) was done in the past decades, and still, the most widely used one for electrochemical processes is the Newman model. [1] The underlying parameters are treated deterministically, but the impact of ... 詳細を見る
Fast charging of lithium-ion batteries is critical to commercial application of electrical vehicles (EV). Recharging lithium-ion batteries using standard charging methods usually takes more than one hour which is considerably longer than refueling an internal-combustion-engine (ICE) car. ... 詳細を見る
Freeze-dried (lyophilized) drug products offer extended shelf life and improved drug stability within a range of combination products including autoinjectors and pre-filled syringes. A key step in the use of combination products is the reconstitution of the freeze-dried drug product (DP) ... 詳細を見る
Battery grids are critical system used in automobile, renewable energy, medical devices and mobile phones. Research efforts are directed to increase energy density, longevity and reduce the cost. This paper is related to computational optimisation of lead acid battery for efficiency and ... 詳細を見る