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.
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Aplicação de Elementos Finitos na Ortodontia

T. O. Bassani [1], T. Bassani [2], A. Andriguetto [1], F. Schneider [2],
[1] Instituto Latino Americano de Pesquisa e Ensino Odontológico - ILAPEO, Curitiba, PR, Brasil
[2] Universidade Tecnológica Federal do Paraná – UTFPR, Curitiba, PR, Brasil

O presente estudo visou a avaliação, por meio do método dos elementos finitos, das tensões geradas em um arco ortodôntico chamado de Arco de Retração Dupla Chave, também conhecido como DKL. Para isso foram modeladas as geometrias do arco DKL, dos bráquets e das coroas dentais, no software COMSOL Multiphysics®. O modelo criado tem como objetivo a substituição dos métodos tradicionais de ...

Free Convection In A Square Cavity Partially Filled With Porous Media With Spatial Wall Temperature

A. I. A. Alsabery [1]
[1] Universiti Kebangsaan Malaysia (UKM), Malaysia

Free convective fluid flow and heat transfer in cavity domains has received considerable attention over the past few years and the importance of this problem is due to the broad spectrum of industrial applications and environmental situations. The aim of this study is to investigate the effect of Darcian free convective heat transfer in a square cavity partially filled with porous media with ...

The Visualization of Ocean Movement in Southern Ocean

M. M. Saidi [1]
[1] Universiti Teknologi Malaysia, Malaysia

Ocean is the cornerstone in Earth’s system because the surface of the Earth is covered by ocean about 71%. Ocean also holds approximate 97% of the Earth’s water. Ocean is always moving and continuous. This study is focusing on the ocean movement in Southern Ocean which is located in the southernmost of the Earth. It can be called as Antarctica Ocean because it consists of the waters extending ...

The Impact of Using Computer Models on Academic Performance of Engineering Students

M. Habibnezhad [1], J. Puckett [1], E. Musavi [1],
[1] Durham School of Architectural Engineering & Construction, University of Nebraska-Lincoln, Lincoln, NE, USA

Encouraging students to take on a Science, Technology, Engineering, and Math (STEM) major has recently been a top priority in the nation’s policy-making debates. STEM-related majors often time are deemed very difficult and demanding. Specifically, students tend to face difficulties to conceptualize engineering problems which can eventually impede otherwise successful individuals from pursuing a ...

Investigation of Low Energy Impact on Aeronautical Composite

M. Buonsanti [1], F. Ceravolo [1], G. Leonardi [1],
[1] Universita' Mediterranea Dipartimento Dicema, Reggio Calabria, Italy


Composite behavior when undergoing to low energy impact has been investigated thorough modelling and simulation computation. We consider the dynamic impact among a small granular material piece and a large composite material body. Really, our investigation will to simulate the aeronautical debris impact similarly when aircraft perform the taxi on the runway or when in the deceleration phase ...

Simulation of Pearl-Chain Formation of Microparticles by Acoustic Standing Waves, including Inter-Particle Forces and Collisions

T. Baasch [1], J. Dual [1],
[1] ETH Zurich, Insitute for Mechanical Systems, Zurich, Switzerland

Acoustic standing waves can be used to manipulate micrometer sized particles, cells and organisms. In most applications these objects are driven towards pressure nodal lines, predominantly by the primary acoustic radiation force. Interestingly, at intermediate particle concentrations, detailed phenomena of line-formation and inter-line repulsion occur. Such phenomena are believed to be caused by ...

Product Design of Macro Optical Clocking by Ray Optics

V. Vinothkumar[1], R. C. Thiagarajan [1],
[1] ATOA Scientific Technologies Pvt Ltd, Bangalore, India.

Optical cloaking was considered as fictional. Recent developments shows that macro scale optical cloaking is practical and functional. Brief review of ray optics based macro optical cloaking concepts are given. COMSOL Multiphysics® software simulations of cloaking devices are detailed. The geometric optics principles used to develop cloak for hiding objects are given. Invisibility of both the ...

数值模拟涂层保护法保护碳钢电位分布

向斌 [1], 江露 [1], 周洋 [1], 王佳宁 [1]
[1] 重庆大学化学化工学院,重庆,中国

引言:钢结构设备的防腐保护主要采用阴极保护和涂层保护。其中,涂层保护除了防腐同时具备防红外、降温等特殊性能。 此次模拟,通过 COMSOL Multiphysics® 模拟设备在裸钢和 SiO2@ATO 涂层状态下的表面电位分布,证实了 SiO2@ATO 涂层的防腐性和抗红外及降温性能,并验证了 COMSOL Multiphysics® 数值模拟碳钢腐蚀表面电位分布的可靠性。 模拟过程中,假设电解质电导率为常数,阳极的各参数(尺寸、成分、分布等)保持不变。 计算方法:使用“二次电流分布”接口描述电极反应,“稀物质传递”接口描述亚铁离子输运,采用瞬态研究。参数: 1)温度 T; 2)电解质电导率 σ; 3)阴、阳极平衡电位 E_a、E_c; 4)阴、阳极交换电流密度 i0_c、i0_a; 5)传递系数 α 和 β; 6)初始时刻的亚铁离子浓度; 7 ...

The Nonlocal Optical Response of Gold Nanowire

Changyin Ji [1], Qingfan Shi [1], Yongyou Zhang [1], Ning Zheng [1], Liangsheng Li [2],
[1] Beijing Institute of Technology, School of Physics, Beijing, China
[2] Science and Technology on Electromagnetic Scattering Laboratory, Beijing, China

Recently, the researchers usually use the hydrodynamic Drude model (HDM)to investigate the nonlocal optical response of metallic nanostructure. The advantage of the HDM is easy to implement numerical calculation for larger and more complex shaped nanoplasmonic structures. For the HDM, it is predicted that the nonlocal response blueshifts the resonance peak, modifies the electric field ...

Solving Time-Dependent Optimal Control Problems in COMSOL Multiphysics

I. Neitzel[1], U. Prüfert[2], and T. Slawig[3]
[1]DFG priority program SPP 1253, Technische Universität Berlin, Berlin, Germany
[2]DFG research center Matheon, Technische Universität Berlin, Germany
[3]DFG Cluster of Excellence The Future Ocean, DFG priority progam SPP 1253, Christian-Albrechts-Universität zu Kiel, Kiel, Germany

We use COMSOL Multiphysics to solve time-dependent optimal control problems for partial differential equations whose optimality conditions can be formulated as a PDE. For a class of linear-quadratic model problems we summarize known analytic results on existence of solutions and first order optimality conditions that exhibit the typical feature of time-dependent control problems, namely the fact ...