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Ici vous trouverez les présentations issues des Conférences COMSOL à travers le monde. Réalisées par des utilisateurs de COMSOL Multiphysics, ces présentations explorent tous les domaines actuels d'innovation. Les applications couvrent pratiquement tous les secteurs industriels et impliquent des phénomènes électriques, mécaniques, fluidiques et chimiques. Utilisez la recherche rapide pour trouver les présentations les plus intéressantes dans votre domaine d'intérêt.

Consultez les proceedings de la Conference COMSOL 2024

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A Study of Thermo-Fluid Behavior in Tubular Metal Hydride Beds in the Hydriding Process

S. Makridis[1], E.I. Gkanas[1], A. Ioannidou[2], E.S. Kikkinides[2], A.K. Stubos[3]
[1]Department of Mechanical Engineering, University of Western Macedonia, Kozani, Greece & Environmental Research Laboratory, Institute of Nuclear Technology and Radiation Protection, NCSR “Demokritos”, Athens, Greece
[2]Department of Mechanical Engineering, University of Western Macedonia, Kozani, Greece
[3]Environmental Research Laboratory, Institute of Nuclear Technology and Radiation Protection, NCSR “Demokritos”, Athens, Greece

Hydrogen, the most abundant element in the universe, has great potential as an energy source, and can be generated from renewable energy sources. We used COMSOL for the solution of the energy, mass and momentum balance equations that describe the hydrogen absorption and desorption ... En savoir plus

Perforation Effect on a Rectangular Metal Hydride Tank for Hydriding and Dehydriding Process

E. Gkanas[1][2], S. Makridis[1][2], E. Kikkinides[1], A. Stubos[2]
[1]Department of Mechanical Engineering, University of Western Macedonia, Kozani, Greece
[2]Environmental Laboratory, Institute of Nuclear Technology and Radiation Protection, NCSR 'Demokritos', Agia Paraskevi, Athens, Greece

Hydrogen storage in a metal hydride bed, uses an intermetallic alloy that can absorb efficiently high amounts of hydrogen by chemical bonding resulting to metal hydrides. This alloy is capable of absorbing and desorbing hydrogen while maintaining its own structure. The heat, mass and ... En savoir plus

CFD Based Optimisation of a Laboratory Scale Silo

A. Egedy [1], A. Rado [1],
[1] University of Pannonia, Faculty of Engineering, Veszprém, Hungary

The flow simulation of solid, particulate materials is still challenging, even though estimations show that three-quarters of products and raw materials are present as granules form in the industry. We can think of grain in the agriculture, raw materials of the glass industry, granulated ... En savoir plus

Enthalpy Porosity Method for CFD Simulation of Natural Convection Phenomenon for Phase Change Problems in the Molten Pool and its Importance during Melting of Solids

Priyanshu Goyal[1], Anu Dutta[1], V.Verma[1], I. Thangamani[1], R.K. Singh[1]
[1]Bhabha Atomic Research Centre, Mumbai, India

Shielded transportation casks are commonly used for transportation and storage of radioactive waste materials. Design approval of such casks by regulatory authority is subject to its compliance with a thermal test (among other tests) Due to exposure of cask to fire , there is a ... En savoir plus

A 3-Dimensional Borehole Numerical Modeling for Single and Double U-tube Ground-Coupled Heat Pump

A. Tarrad¹
¹Université de Lorraine, CNRS, LEMTA, Nancy, France

The heat transfer rate and borehole design represent great challenges to thermal equipment designer of the ground-coupled heat pump. The present model represents a mathematical numerical technique implemented to tackle such problem. A thermal assessment was established to estimate the ... En savoir plus

用于储能的碱性锌铁液流电池充放电模拟

谈鹏¹, 陈梓颀¹
¹中国科学技术大学工程科学学院热科学和能源工程系

碱性锌铁液流电池是一种新兴的电化学储能技术，其具有价格低廉、环境友好、能量密度高等特点，具有巨大的发展潜力。但目前尚缺乏相关的理论研究，制约了其性能的提高。这项工作运用COMSOL建立了一个瞬态二维的碱性锌铁液流电池充放电模型。模型耦合了电化学模块中的三次电流分布接口与全局常微分和微分代数方程接口，用于刻画电池的电化学反应过程与电池及外部电解槽的质量平衡。该模型参考了案例库中的钒氧化还原液流电池、可溶性铅酸氧化还原液流电池和锌-氧化银电池一维等温模型三个案例，考虑了电化学反应所导致的电极中的孔隙率和物质浓度的变化 ... En savoir plus

Development of a Multiphase, Multispecies Droplet Evaporation Model for Optimization of Desiccation Preservation Techniques

A. Sinkevich[1], S. Bhowmick [1], M. Raessi[1]
[1]University of Massachusetts Dartmouth, North Dartmouth, MA, USA

Biopreservation deals with the protection and storage of complex biologics such as proteins, lipids, and recently, mammalian cells. One preservation method, known as lyopreservation, involves placing a biologic inside a water droplet with some type of sugar excipient (sucrose, trehalose, ... En savoir plus

钯吸氢动力学性能的数值模拟

刘启航 [1], 罗子峰 [1],
[1] 上海大学材料科学与工程学院

储氢合金的PCT曲线和氢化动力学性能是描述合金储氢性能的重要标准，目前对合金的PCT曲线测试一般采用体积法，对合金氢化反应动力学的研究一般采用等容差压法。但在实际生产过程中，储氢合金通常是在恒定氢气流速的情况下工作的，所以研究合金在恒定氢气流速条件下的吸氢动力学性能很有必要。与实验相比，采用数值模拟预报合金的吸放氢性能节省了大量的时间和成本，具有突出优势。目前金属Pd及其合金被广泛应用于储氢及氢气纯化等领域，我们通过COMSOL软件建模，构建Pd吸氢热力学与动力学特性模型，选用传热、流体流动、域常微分等物理场模块建立了Pd在恒定氢气流速下吸氢动力学的计算模型 ... En savoir plus

Modeling Convection during Melting of a Phase Change Material

D. Groulx, and R. Murray
Mechanical Engineering
Dalhousie University
Halifax, NS
Canada

COMSOL Multiphysics can be used to model a latent heat energy storage system. A 2D numerical study was performed to simulate melting of a PCM including both conduction and convective heat transfer. The heat transfer in fluids and laminar flow physics interfaces were used. To model ... En savoir plus

Modeling and Simulation of Artificial Core-Shell Based Nanodielectrics for Electrostatic Capacitors Applications

D. Musuwathi Ekanath[1], N. Badi[1], and A. Bensaoula[2]
[1]Center for Advanced Materials, University of Houston, Houston, TX
[2]Dept. of Physics, University of Houston, Houston, TX

The need for high storage capacitors led to the development of polymer based capacitors. Polymers have high processability, mechanical flexibility, electrical breakdown strength and compatibility with printed circuit board (PCB) technologies; but usually have very low permittivity (K). ... En savoir plus

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