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.

Investigating the Loading Behaviour of Intact and Meniscectomy Knee Joints and the Impact on Surgical Decisions

M. S. Yeoman [1],
[1] Continuum Blue Ltd., Cardiff, United Kingdom

Knee joints are often subject to high loads, which can lead to injury, malalignment, and the progression of osteoarthritis in patients. To better understand the behavior, and the effect of meniscal damage and different meniscectomy repair approaches, a 3D structural mechanics model of a patient specific knee was developed in COMSOL Multiphysics®. The model made use of the Structural Mechanics ...

Modeling Internal Erosion Processes in Soil Pipes

J. L. Nieber [1], G. V. Wilson [2], G. A. Fox [3],
[1] University of Minnesota, St. Paul, MN, USA
[2] United States Department of Agriculture - Agricultural Research Service National Sedimentation Laboratory, Oxford, MS, USA
[3] North Carolina State University, Raleigh, NC, USA

The erosion of the interior of soil pipes is an important process in the fields of geomechanics and geomorphology. Soil pipes can form in water holding structures like dams and levees, and water flow through these structures becomes concentrated into the soil pipes as they evolve by the process of internal erosion. With time the erosion process will lead to a soil pipe spanning the entire ...

超导转变边探测器 (TES) 的电热仿真

吕越 [1],
[1] 中国科学院上海微系统与信息技术研究所

超导转变边沿探测器 (TES) 是一种电压偏置的电热器件,稳态时超导薄膜产生的焦耳热与通过热连接传递到热沉的热量相等。本文利用有限元仿真软件 COMSOL Multiphysics® 对处于热平衡的 TES 进行了电流-热传导仿真。得到稳态时TES器件的温度分布,并计算得到TES器件的关键参数热导 G,同时得到了器件处于稳态时薄膜温度与偏置电压 (V-T) 的关系,这对于器件设计有着极大的帮助。

±800kV 直流输电线路标称电场计算

王平 [1], 李抗 [1], 钦雨晨 [1], 赵映宇 [1],
[1] 华北电力大学

为提高长距离大容量输电的经济性,我国采用特高压直流技术。随着特高压工程的建设和民众电磁环境意识的增强,电磁环境成为影响输电线路结构和建设费用的重要因素。合成电场是特高压输电工程的电磁环境效应之一,其由导线电荷产生的标称电场和空间电荷产生的离子流场组成。标称电场的计算是合成电场计算的前提,本文采用 COMSOL 软件计算了 ±800kV 直流输电线路周围的标称电场。

Modeling of Vibrating Atomic Force Microscope´s Cantilever within Different Frames of Reference

E. Kamau, and F. Voigt
University of Oldenburg, Germany

Cantilever vibration modes were simulated with COMSOL Multiphysics. In the 1st approach the model consisted of an excitation piezo, a holder plate and a chip where the cantilever was mounted on. A sinusoidal voltage signal was applied to the piezo in the simulation, which resulted in movements of the holder plate and finally led to the excitation of the cantilever. In the 2nd approach the model ...

Magneto-hydrodynamic Flow in Electrolyte Solutions

M. Qin[1], and H. Bau[1]
[1]Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Pennsylvania, USA

The paper presents and compares two models for simulating magneto-hydrodynamic flow of RedOx electrolyte in a conduit patterned with circular pillars. The first model solves the coupled Nernst-Planck and Navier-Stokes equations subjected to Butler-Volmer electrode kinetics and provides detailed information on ions’ concentrations. The second model treats the electrolyte as a conductor, and ...

COMSOL Multiphysics® as a General Platform for the Simulation of Complex Electrochemical Systems

A. Lavacchi[1]
[1]Department of Chemistry, University of Firenze, Sesto Fiorentino, FI, Italy

Microelectrodes demonstrate that modeling is crucial for understanding the behavior of complex electrochemical systems. The use of the finite element methods in electrochemistry may be of much more general interest for its ability to handle complex geometries. In this context a software such as COMSOL Multiphysics® allows a straightforward way to the set up models including coupling of ...

Current Density Simulations in the Electrodeposition from Ionic Liquids: Effects of the Conductivity

I. Perissi[1], C. Borri[1], S. Caporali[1], and A. Lavacchi[1]
[1]Department of Chemistry, University of Firenze, Sesto Fiorentino, FI, Italy

The overall goal of this work is the use of COMSOL Multiphysics® in the modeling of the current density distributions for the electrodeposition of aluminum coatings from ionic liquids. The local current distribution is strongly dependant on the conductivity and on the geometry of the galvanic cell and can only be computed by the numerical solution of the partial differential equations ...

Estimation of Boundary Properties Using Stochastic Differential Equations and COMSOL

A. Atalla[1], and A. Jeremic[1]
[1]McMaster University, Hamilton, Ontario, Canada

The inverse diffusion problems deal with the estimation of many crucial parameters such as the diffusion coefficient, source properties, and boundary conditions. Such algorithms are widely applied in many design problems in different physical, chemical, and biological fields. Recently, the estimation of the boundary properties, of the diffusion process, have attracted researchers. We first ...

A Numerical Study for Rubber Particles Collection Involved in New Thermoforming Composite Process Using COMSOL Multiphysics®

R. Carbone[1], V. Antonelli[2][3], A. Langella[1], and R. Marissen[3]

[1]Material and Production Engineering Department, Università degli Studi di Napoli Federico II, Napoli, Italy
[2]Institute of Lightweight Structures, Technische Universität München, München, Germany
[3]Design and Production of Composite Structure, Delft University of Technology, Delft, The Netherlands

This paper deal of the forming process applied to the thermoplastic composites. A new thermoforming process that uses rubber particles collection as flexible mould was presented and numerically modeled. A characterization of the rubber in particles form was previously performed to value the material parameters in the user-defined hyperelastic constitutive laws employed in the FEM (Finite Element ...