Here you will find presentations given at COMSOL Conferences around the globe. The presentations explore the innovative research and products designed by your peers using COMSOL Multiphysics. Research topics span a wide array of industries and application areas, including the electrical, mechanical, fluid, and chemical disciplines. Use the Quick Search to find presentations pertaining to your application area.

Na-MCl2 Cell Multiphysics Modeling: Status and Challenges

R. Christin [1][2], M. Cugnet [2], N. Zanon [3], G. Crugnola [4], P. Mailley [5],
[1] FIAMM, Aubergenville, France
[2] Laboratory for Electrochemical Storage (CEA), Le Bourget du Lac, France
[3] FIAMM R&D, Montecchio, Italy
[4] FIAMM R&D, Stabio, Switzerland
[5] Laboratory of Chemistry for Materials and Interfaces (CEA), Grenoble, France

Introduction: After more than 20 years of experience in EV applications, the sodium nickel chloride technology is fully mature for large scale energy storage. Early on, mathematical modeling of Na-MCl2 cell (M standing for Fe or Ni) has attracted attention to help identifying predominant mechanisms at work during operation. However, these models were rarely validated with data coming from ...

COMSOL 在微波能领域应用研究

朱铧丞 [1], 张春 [1], 叶菁华 [1],
[1] 四川大学,成都,四川,中国

微波作为信息和能量的载体具有同等重要的应用价值,利用微波对物质产生的物理化学效应进行能量传递及转换已经在化学领域有了积极的应用。从 1986 年 R.N. Gedye 等人首次使用微波促进化学反应使其反应速率提高 1240 倍以来,有越来越多的微波和化学领域的科学家对相关问题进行了研究,并出现了一门新兴学科“微波化学”。微波化学作为研究微波能的一个方面是研究微波与化学反应体系相互作用的一个新兴学科。由于当前人们对微波加快化学反应的研究还非常肤浅,微波在大规模应用中并未发挥出其应有的巨大优势,微波化学进一步发展面临着巨大的挑战和机遇。目前微波化学的研究可以分为宏观和微观两个层面:(1)在宏观层面人们并不关心微波对分子之间行为的影响,其研究要用多物理场数值计算方法获得反应体系中电磁场、温度等物理量的分布和变化;(2)微观层面的研究,重点关注微波对反应分子之间相互作用的影响 ...

Model Development and Implementation of a Membrane Shift Reactor

J. Völler[1], M. Follmann[1], C. Bayer[1], and T. Melin[1]

[1]AVT Chemical Process Engineering, RWTH Aachen University, Aachen, Germany

Low temperature fuel cells require hydrogen of high purity for electricity production to avoid catalyst poisoning. To purify hydrogenrich flue gases from hydrocarbon steam reforming membrane shift reactors with a metal membranes may be utilized. A model of a tubular membrane shift reactor with a hydrogenseparating palladium membrane is modeled in the COMSOL Multiphysics® Chemical Engineering ...

Study of the CO2 Transfer Rate in a Reacting Flow for the Refined Sodium Bicarbonate Production Process

C. Wylock[1], A. Larcy[1], P. Colinet[1], T. Cartage[2], and B. Haut[1]
[1]Université Libre de Bruxelles, Brussels, Belgium
[2]Solvay S.A., Brussels, Belgium

This work deals with the quantification of the CO2 transfer rate from a bubble to the surrounding liquid in a bubble column. A model is successfully developed using COMSOL Multiphysics. The validated model is used to study the enhancement influence of chemical reactions on the transfer rate. Moreover, the results of this study are compared with a classical 1-D approach and excellent comparison ...

Singlet Oxygen Modeling for PDT Incorporating Local Vascular Oxygen Diffusion

T. C. Zhu[1], B. Liu[1]
[1]University of Pennsylvania, Philadelphia, PA, USA

Singlet oxygen (1O2) is the major cytotoxic agent that kills cells during photodynamic therapy (PDT). Based on a previously-developed model, the distance-dependent reacted 1O2 can be numerically calculated using finite-element method. We improved the model to include microscopic kinetic equations of oxygen diffusion from uniformly distributed blood vessels to the adjacent tissue. The blood ...

Virtual Pharmacokinetic Model of the Human Eye - new

L. Murtomäki[1], S. Kotha[2]
[1]Aalto University, Greater Helsinki, Finland
[2]University Of Helsinki, Helsinki, Finland

There is a great need for an effective drug treatment of the posterior eye, as the major reason for visual disability in industrial countries is Age-related Macular Degeneration (AMD). In USA alone, there are almost 2 million people affected by AMD [1]. A virtual pharmacokinetic 3D model of the human eye is built to address this problem, using COMSOL Multiphysics® software, based on the Finite ...

Mathematical Formulation of a PEM Fuel Cell Model

E. Robalinho [1], E. F. Cunha [2], M. Linardi [2], E. I. Santiago [2],
[1] Instituto de Pesquisas Energéticas e Nucleares - IPEN/CNEN, São Paulo, SP, Brazil; and Instituto Federal do Rio Grande do Sul - IFRS, Porto Alegre, RS, Brazil
[2] Instituto de Pesquisas Energéticas e Nucleares - IPEN/CNEN, São Paulo, SP, Brazil

The idea of a friendly implementation of a mathematical formulation using specialist software was performed with the support of COMSOL Multiphysics® software with Chemical Reaction Engineering and Batteries & Fuel Cell Modules. The real problem of a Proton Exchange Membrane – PEM fuel cell modeling involves different scales, multiple variables and processes, coupling of solvers and experimental ...

Simulation of Surface Chemical Reactions in a Monolith Channel for Hydrogen Production

N. Pacheco[1], D. Pavone[1], K. Surla[1], J. Houzelot[2], and E. Schaer[2]
[1]IFP-Lyon, Solaize, France
[2]ENSIC, Solaize, France

This paper intends to show a model of a monolithic reactor for the autothermal reforming process (ATR), a process that uses hydrocarbons to produce H2. The ATR chemical reactions take place on the surface of monolith channels coated with a catalyst. The isothermal ATR reactor is modeled using 42 catalytic surface chemical reactions that involve 13 solid species and 7 gas species. To solve the ...

FEM Based Studies of a Mg/Al Hybrid Component Joint Regarding Corrosion Prediction

D. Höche[1]
[1]Helmholtz-Zentrum Geesthacht, Germany

The model can be utilized for a virtual design of a hybrid joint interms of corrosion prevention. Structures can be optimized by the simulations by tailoring the parameters to get the most suitable result towards a Computer-Aided Engineering CAE regarding corrosion protection. This kind of computer based studies is a very useful method to accelerate developments in light weight structural design ...

Modeling of a Biogas Steam Reforming Reactor for Solid Oxide Fuel Cell Systems

F. Cipitì[1]
[1]CNR-ITAE, Institute of Advanced Technologies for Energy, Messina, Italy

A biogas steam reforming reactor has been developed in order to be integrated into a proof-of-concept SOFC system, able to operate with biogas produced in an industrial waste water treatment unit. A mathematical model, aimed at describing the performance of the reactor, has been developed. The reactor is simplified and modeled as a non-isothermal plug flow reactor. The reactor is fed with a ...