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.

Multicomponent Diffusion Applied to Osmotic Dehydration - new

H. Cremasco[1], K. Angilelli[1], D. Borsato[1]
[1]Universidade Estadual de Londrina, Londrina, Paraná, Brazil

The transfer of sucrose and fructooligosaccharides to melon and water to solution was modeled based on generalized form of Fick’s second law for simultaneous diffusion and resolved by the finite element method using the software package COMSOL Multiphysics® software. The diffusion coefficients, the mass transfer coefficient and the Biot number were determined using the simplex optimization ...

Simulation Methods on Virtual Laboratories for Characterization of Functionalized Nanostructures

E. Lacatus [1], G. C. Alecu [2], A. Tudor [3], M. Sopronyi [4],
[1] Polytechnic University of Bucharest, Bucharest, Romania
[2] Groupe Renault, Bucharest, Romania
[3] STAR STORAGE,Bucharest, Romania
[4] National Institute for Laser, Plasma and Radiation Physics, Magurele, Romania
[5] Polytechnic University of Bucharest, Bucharest, Romania

Within the emerging integrative concept of IoT (Internet of Things) and IIoT (Industrial Internet of Things) that are paving the way towards Digital Manufacturing Technologies and the next paradigm shift of Industry 4.0, R&D Laboratories have to be at the forefront of the transformation. Using remotely the existing top R&D Laboratories facilities would become soon common practice, but for now ...

Transient Pseudo-3D Model of Multi-Beam Laser Thermal Treatment System

J. Brcka
Technology Development Center
TEL US Holdings, Inc.
Albany, NY

Laser thermal treatment (LTT) systems have applications in IC fabrication for improving low-k dielectrics properties, polymer curing and resist processing. This contribution deals with a transient model of fast scanning and pulsing laser multi-beam system used in semiconductor processing. General Heat Transfer application mode formulation with multi-scale modelling approaches are employed. ...

Time Dependent Dirac Equation FEM Solutions for Relativistic Quantum Mechanics

A. J. Kalinowski [1],
[1] Consultant, East Lyme, CT, USA

The paper illustrates the use of COMSOL (via the “Coefficient-Form PDE” option) for obtaining the relativistic quantum mechanics wave function Ψm(x,y,z,t), m=1,4 as a solution to the time dependent Dirac equations. Once having Ψm(x,y,z,t), it can be used to compute the probability density ρd=Σ|Ψm|2of a particle being at a specific point within the spatial field under consideration. Six problems ...

The Use of COMSOL in Teaching Heat and Moisture Transport Modeling in Building Constructions

A.W.M. van Schijndel[1] and H.L. Schellen[1]
[1]Eindhoven University of Technology, Eindhoven, The Netherlands

This paper presents the use of the multiphysics package COMSOL for teaching heat and moisture transport modeling in the research area of building physics. It includes a description on how COMSOL works and six exercises with 2D, 3D, steady state and transient models. It is concluded that COMSOL is a very useful tool for this kind of engineering education. Especially, the abstraction level of ...

Early Stage Melt Ejection in Laser Percussion Drilling

T. Eppes[1]
[1]University of Hartford, Hartford, CT, USA

Laser percussion drilling is widely used in the aerospace industry to produce cooling holes in jet engine components. This process is a thermal, contact-free process which involves firing a sequence of focused optical pulses onto a target material [1-4]. During each optical pulse, the central portion of the target area heats to a liquid then vapor state where the expanding gas produces a recoil ...

挠曲电效应对多畴铁电薄膜 I-V 特性的影响

徐肖飞 [1], 徐光楠 [1], 刘志远 [1], 吴鹏 [1], 彭金霖 [1], 许保磊 [1],
[1] 湘潭大学,湘潭,湖南,中国

引言:铁电薄膜材料是一类具有优异性能的功能材料而被广泛应用于电子元器件中。理想状态下铁电薄膜材料为绝缘体或宽禁带半导体,但实际中铁电薄膜材料会因为制备或者在元器件中因为界面引入带电粒子或缺陷,引起较大的电流,影响电子元器件的性能。我们建立了考虑挠曲电效应及带电粒子漂移扩散的相场模型用以研究挠曲电效应对 Pt/PZT/Pt 多层结构的 I-V 特性的影响。 COMSOL Multiphysics® 的使用:我们使用 COMSOL 建立了一个二维平面模型(如图1),使用的是 PDE 接口,未使用案例库模型。 结果:我们通过模拟得到了不同挠曲电耦合系数下铁电薄膜的应变梯度云图(如图2)、极化云图(如图3)和电势云图(如图4),做出了不同挠曲电耦合系数下铁电薄膜的 I-V 曲线。 结论:极化与纵向应变梯度之间的耦合会导致铁电薄膜内电势的降低,增加载流子空穴在铁电薄膜内的浓度 ...

Nature-Inspired Surfaces and Engineering Applications Using COMSOL Multiphysics®

R. C. Thiagarajan [1], P. Asutosh[1],
[1] ATOA Scientific Technologies Pvt Ltd, Whitefield, Bangalore, Karnataka, India.

Engineering design has long been dominated by orthogonal Cartesian principles. Nature inspired equation based mathematical surfaces are under renewed interest due to their innovative design potential and practical viability by 3D printing. In this paper, the parametric surface modelling feature of COMSOL Multiphysics® is leveraged for developing engineering structures from equation based ...

Several Benchmarks for Heat Transfer Problems in COMSOL Multiphysics®

S. Titarenko[1]
[1]University of Leeds, Leeds, United Kingdom

Nowadays all branches in modern science and industry tend to solve ever complicating problems. As the result the computational time increases considerably and it become very important to reduce the processing time and use available resources more efficiently. Parallelizing problem proves itself as efficient way to overcome the described problem. In the poster we compare different methods of ...

COMSOL Multiphysics® Automated Installation Verification via LiveLink™ for MATLAB®

M. W. Crowell [1],
[1] Research Reactors Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA

Verifying that a local software installation performs as the developer intends is a potentially time consuming but necessary step for nuclear safety related codes. Automating this process not only saves time, but can increase reliability and scope of verification compared to ‘hand’ comparisons. While COMSOL does not include automatic installation verification as many commercial codes do, it does ...