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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.

CVD Graphene Growth Mechanism on Nickel Thin Films - new

K. Al-Shurman[1], H. Naseem[2]
[1]The Institute for Nanoscience & Engineering, University of Arkansas, Fayetteville, AR, USA
[2]Department of Electrical Engineering, University of Arkansas, Fayetteville, AR, USA

Chemical vapor deposition is considered a promising method for synthesis of graphene films on different types of substrate utilizing transition metals such as Ni. However, synthesizing a single-layer graphene and controlling the quality of the graphene CVD film on Ni are very challenging due to the multiplicity of the CVD growth conditions. COMSOL Multiphysics® software is used to investigate ...

Modeling of Transport Phenomena in Gas Tungsten Arc Welding of Ni to 304 Stainless Steel

A. Bahrami[1], D. K. Aidun[1]
[1]MAE Department, Clarkson University, Potsdam, NY, USA

COMSOL Multiphysics® is used to simulate the transport phenomena in arc welding of Nickel to 304SS. Electric Currents (ec) and Magnetic Fields (mf) are used to solve for the Lorentz force which is one of the volume forces. Laminar Flow (spf) is used to simulate flow field. The Lorentz and buoyancy forces are applied as volume forces to the fluid domain. Marangoni effect also is applied to the ...

Design and Simulation of Unimorph Piezoelectric Energy Harvesting System

E. Varadarajan[1], M. Bhanusri[2],
[1]Research and Innovation Centre (RIC), IITM Research Park, Chennai, Tamil Nadu, India
[2]Department of Physics, Indian Institute of Technology (IIT) Madras, Chennai, Tamil Nadu, India

In this paper we made an attempt to maximize the power output in the different piezoelectric materials in a unimorph cantilever beam configuration. In this research, a macro scale unimorph piezoelectric power generator prototypes consists of an active piezoelectric layer, stainless steel substrate and titanium proof mass was designed for frequencies 60 Hz - 200 Hz. An analytical model of a micro ...

Optical and Electrical Modeling of Three Dimensional Dye Sensitized Solar Cells

P. Guo[1]
[1]Northwestern University, Evanston, IL, USA

Dye sensitized solar cells (DSSCs) have received tremendous attention as alternative photon harvesting devices. While the sintered TiO2 nanoparticle network attached with dye molecules achieves efficient photon absorption, the electrons have to diffuse through the long TiO2 network to reach the contact, resulting in a high electron density and thus increased recombination. Extensive research ...

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 potential. ...

Submarine Gas Hydrate Reservoir Simulations - A Gas/Liquid Fluid Flow Model for Gas Hydrate Containing Sediments - new

S. Schlüter[1], T. Hennig[1], G. Janicki[1], G. Deerberg[1]
[1]Fraunhofer UMSICHT, Oberhausen, Germany

In the medium term, gas hydrate reservoirs in the subsea sediment are intended as deposits for carbon dioxide (CO2) from fossil fuel consumption. This idea is supported by the fact, that CO2 hydrates are more stable than methane hydrates at certain conditions. The potential of producing methane by depressurization and/or by injecting CO2 is studied in the frame of the research project SUGAR. ...

Dynamics of Rotors on Hydrodynamic Bearings

R. Eling[1]
[1]Mitsubishi Turbocharger & Engine Europe, Almere, The Netherlands

This study presents a rotordynamic analysis of a rotor on hydrodynamic bearings using COMSOL Multiphysics®. In this paper, the complexity of the model is gradually increased. Starting point of the analysis is the modal analysis of the rotor in free-free conditions. A Reynolds model is set up to predict the film pressure distribution under shaft loading. Due to the cross coupling terms of the ...

Models of Simple Iron Cored Electromagnets - new

J. Mammadov[1]
[1]University of Manchester, Manchester, UK

This report mainly discusses the implementation and results of a project proposal, “Modelling using Finite Element Methods”. The report is devoted to implementation, which is a model of an electromagnet. The software tool that is used to model the electromagnet is COMSOL Multiphysics®, a commercial FEA package provided by the University of Manchester, Computer Science School. Additionally, ...

Evaluation of Novel Wing Design for UAV - new

P. K. Bahumanyam[1]
[1]University of Alabama in Huntsville, Huntsville, AL, USA

Viable design alternative for the existing and fast growing UAVs which are optimized for unmanned flight is of great demand. Designing of a small scale UAV alternative to the AAI Aerosonde UAV has been considered changing the wing tail configuration of the vehicle analyzing both structural and aerodynamic performance improvements using COMSOL Multiphysics® software.

A Practical Method to Model Complex Three-Dimensional Geometries with Non-Uniform Material Properties Using Image-based Design and COMSOL Multiphysics®

J. Cepeda[1], S. Birla[2], J. Subbiah[2], H. Thippareddi[1]
[1]Department of Food Science & Technology, University of Nebraska, Lincoln, NE, USA
[2]Department of Biological Systems Engineering, University of Nebraska, Lincoln, NE, USA

Geometries with heterogeneous material properties are typically defined as a set of multiple parts, each part representing a different material. However, assembling or defining the individual parts of complex geometries can be difficult. A practical method based on image-based mesh generation, a custom algorithm for labeling materials, and interpolation functions of COMSOL Multiphysics® can be ...

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