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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.

Simulation of Cyclic Voltammetry of Ferrocyanide/Ferricyanide Redox Reaction in the EQCM Sensor

H. Kwon, and E. Akyiano
Dept. of Engineering and Computer Science
Andrews University
Berrien Springs, MI

In this paper, the cyclic voltammetry behavior of Ferrocyanide/Ferricyanide, which is commonly used for electrochemical DNA detection experiment, was studied in the commercial EQCM-D setup (Q-sense) using the COMSOL Multiphysics. The model was established in a 3D geometry of QCM liquid cell. The simulation shows depletion of concentration of ferrocyanice following applied electrode ...

Simulation of Current Density for Electroplating on Silicon Using a Hull Cell

F. Lima[1], U. Mescheder[1], H. Reinecke[3]
[1]Hochschule Furtwangen University, Furtwangen, Baden-Wuerttemberg, Germany
[3]Institut für Mikrosystemtechnik, Freiburg im Breisgau, Baden-Wuerttemberg, Germany

Electrodeposition has a major advantage over other methods of thin film deposition. It allows deposition at atmospheric pressure and room temperature, requiring inexpensive equipment. However, there are several parameters which can influence an electroplated metal layer quality. The current density distribution is taken into consideration. The Hull cell is an electrodeposition tank with a ...

Numerical Study of Navier-Stokes Equations in Supersonic Flow over a Double Wedge Airfoil using Adaptive Grids

V. Gopal[1], R. Kolluru[1]
[1]BMS College of Engineering, Bangalore, Karnataka, India.

Numerical study of aerodynamic characteristics in steady laminar supersonic flow over a double wedge airfoil is carried out using commercially available finite element based CFD tool COMSOL Multiphysics. The aerodynamic characteristics of double wedge airfoil like lift and drag are analyzed by solving Navier-Stokes equations in the flow field for various thickness to chord ratios (t_c) and angle ...

Modelling of Pressure Profiles in a High Pressure Chamber using COMSOL Multiphysics

P. S. Rao[1], C. K. Chandra[1]
[1]Agricultural and Food Engineering Department, Indian Institute of Technology Kharagpur, West Bengal, India

High Pressure Processing (HPP) is a leading non-thermal food processing technology that is often cited as a major technological innovation in food preservation. Although it is very early to place this emerging technology among the list of breakthroughs in food processing, HPP has started to become a viable commercial alternative for pasteurisation of value added fruits, vegetables, meat, and ...

Optimizing the Performance of MEMS Electrostatic Comb-Drive Actuator with different Flexure Springs

S. Gupta[1], T. Pahwa[1], R. Bansal[1], V. Bansal[1], B. Prasad[1], D. Kumar[1]
[1]Electronic Science Department Kurukshetra University, Kurukshetra, Haryana

A new design of electrostatic comb drive actuator is presented in this paper by using different spring designs and with different folded beam lengths. An increased displacement of lateral comb drive actuator will subsequently be accomplished with the same actuation voltage. Stress distribution over different spring designs are simulated by COMSOL 3.5a using a standard comb drive with 4 movable ...

State of Charge (SOC) Governed Fast Charging Method for Lithium Based Batteries

F. Naznin[1]
[1]TVS Motor Company Ltd., Hosur, Tamil Nadu, India

The proposed State of Charge (SOC) governed fast charging method for secondary lithium based batteries charges a battery many times faster than the normal Constant Current-Constant Voltage (CC-CV) charging and reduces the side-effects generally accompanied by various fast charging methods. The proposed charging algorithm takes into account the varying internal impedance of the battery at ...

Modeling Convection during Melting of a Phase Change Material

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

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 natural convection, proper volume force was applied to the PCM. The viscosity was input as a piecewise, continuous ...

Design of Small-Scaled de Laval Nozzle for IGLIS Experiment

E. Mogilevskiy[1], R. Ferrer[1], L. Gaffney[1], C. Granados[1], M. Huyse[1], Yu. Kudryavtsev[1], S. Raeder[1], P. Van Duppen[1]
[1]KU Leuven, Instituut voor Kern- en Stralingsfysica, Leuven, Belgium

De Laval nozzles are used in supersonic aerodynamical tubes and engines. They are also employed for the production of cold gas jets to be used in chemical reactions studies. Recently, cold gas jets have been proposed of In-Gas Laser ionization Spectroscopy (IGLIS) The nozzle has a converging and a diverging part with a throat between them. High gas pressure and temperature, and low velocity ...

Heat and Mass Transfer in Convective Drying Processes

C. Gavrila[1], A. Ghiaus[1], and I. Gruia[2]
[1]Technical University of Civil Engineering Bucharest, Faculty of Building Services, Bucharest, Romania
[2]University of Bucharest, Faculty of Physics, Bucharest, Romania

A dynamic mathematical model, based on physical and transport properties and mass and energy balances, was developed for the simulation of unsteady convective drying of agricultural products (fruits and vegetables) in static bed conditions. The model utilizes water sorption isotherm equations and the change in solid density due to the shrinkage phenomenon. The aim of this article is to describe ...

COMSOL Multiphysics in Plasmonics and Metamaterials

S. Sun [1,2], and G. Guo [2,3]
[1]Physics Division, National Center for Theoretical Sciences (North), National Taiwan University, Taipei 10617, Taiwan
[2]Department of Physics, National Taiwan University, Taipei 10617, Taiwan
[3]Graduate Institute of Applied Physics, National Chengchi University, Taipei 11605, Taiwan

This paper will present research about: * Effective-medium properties of metamaterials: A quasi-mode theory * 2D complete band gaps from 1D photonic crystal * Optical microcavities