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.

Level Set Method for Fully Thermal-Mechanical Coupled Simulations of Filling in Injection and Micro-Injection Molding Process

M. Moguedet[1], R. Le Goff[1], P. Namy[2], and Y. Béreaux[3]
[1]Pôle Européen de Plasturgie, Bellignat, France
[2]SIMTEC, Grenoble, France
[3]INSA de Lyon, Site de Plasturgie, Bellignat, France

In this work we tackle a more theoretical aspect of micro-injection molding, to better understand physics during the process, through numerical simulations of cavity filling. We developed a two phase flow approach by the use of COMSOL Multiphysics®. In a first step, a Level Set model is applied to several configurations: Newtonian and non Newtonian fluid (Cross viscosity law), coupled with a ...

Modeling the Vanadium Oxygen Fuel Cell

F.T. Wandschneider[1], M. Küttinger[1], P. Fischer[1], K. Pinkwart[1], J. Tübke[1], H. Nirschl[2]
[1]Fraunhofer-Institute for Chemical Technology, Pfinztal, Germany
[2]Karlsruhe Institute for Technology, Karlsruhe, Germany

A two-dimensional stationary model of a vanadium oxygen fuel cell is developed in COMSOL Multiphysics®. This energy storage device combines a vanadium flow battery anode and an oxygen fuel cell cathode. The oxygen reduction reaction generates additional water, leading to a degradation of the catalyst performance over time. A logistic function is introduced to the Butler-Volmer equation in order ...

Thermal Study of Valve Regulated Lead Acid Batteries and Electronics Chamber Used in Stand-Alone Street Lighting Applications - new

D. Groulx[1], J. Skaalum[1], T. Jamieson[1]
[1]Mechanical Engineering, Dalhousie University, Halifax, NS, Canada

This paper presents a study on the heat generation of Valve-Regulated Lead Acid (VRLA) batteries used in off-grid streetlighting applications from PoleCo, a Halifax based company. One goal of the project was to produce validated COMSOL® models of the enclosure that holds these VRLA batteries. This model can then be used to investigate methods of reducing the temperature of the batteries based on ...

Multiphysics Modeling of the Graphite Electrode Joint in Electric Arc Furnaces for Steel Recycling

N. May [1], M. Waldner [2],
[1] GrafTech International Holdings, Inc., Independence, OH, USA
[2] Case Western Reserve University, Cleveland, OH, USA

Electric Arc Furnaces (EAF) use graphite electrodes to strike an arc to melt scrap steel, recycling it for further use. These graphite electrodes oxidize and are consumed over time. To maintain operation new electrodes are attached to others via a joint of complex geometry and fed through the system to provide semi-continuous operation. This joint is composed of two electrode ends, each with ...

Using COMSOL Multiphysics® Software and the Application Builder for Neutron Transport in Discrete Ordinates

C. J. Hurt [1], J. D. Freels [2],
[1] University of Tennessee, Knoxville, TN, USA
[2] Oak Ridge National Laboratory, Oak Ridge, TN, USA

Introduction: The numerical solution to the neutron transport equation is employed to study a variety of problems in nuclear engineering applications, including for both eigenvalue and fixed source studies. Historically, multiphysics analysis at the HFIR has utilized these solutions to include thermal-structural and thermal hydraulic physics with a weak coupling due to the limited ...

Quench Propagation and Detection in a YBCO Racetrack

G. Escamez[1], C. Lorin[1], T. Wu[1], P. J. Masson[1]
[1]University of Houston, Houston, TX, USA

High temperature superconductors (HTS) such as YBCO coated conductors show great promise for future applications where high magnetic fields are needed. The superconducting state only exists under a critical surface defined in the (J,T,B) space. Quench is the process by which a current-carrying superconducting conductor changes rapidly and irreversibly from the superconducting state to the non ...

Embedded Microfluidic/Thermoelectric Generation System for Self-Cooling of Electronic Devices - new

R. Kiflemariam[1], H. Fekramandi[1], C. Lin[1]
[1]Department of Mechanical & Materials Engineering, Florida International University, Miami, FL, USA

A 3D electro-conjugate heat transfer model was made to study an embedded microfluidic/TEG system (μF/TEG) system. An innovative embedded microfluidic/TEG system (μF/TEG) system is proposed which enables a device to be able to provide power to its cooling system eliminating external power input and resulting in energy efficient and more reliable heat removal system. The research identifies ...

Photo-Biological Reactor for Organic Waste Consumption and Hydrogen Production - new

L. F. de Souza[1]
[1]Universidade Federal do Paraná, Curitiba, Paraná, Brazil

A simple steady-state photo-fermentative biochemical model was developed using the COMSOL Multiphysics'® Transport of Diluted Species physics interface. A dimensionless model seeks optimal physical parameters based on given biochemical parameters found in literature. A parametric sweep of the physical parameters is enabled without altering the mesh. Other limitations can be easily added to this ...

Feasibility Study of Thermal Actuators for MEMS Variable Emittance Radiators

L. Pasqualetto Cassinis [1],
[1] TU Delft, Delft, Netherlands

Based on COMSOL Multiphysics® software, an analysis of an innovative thermal actuation system capable of overtaking the traditional electrostatic comb drive, nowadays used for actuating the shutter array of variable emittance radiators, has been conducted as to validate this technology for the future active thermal control of CubeSats operating in an harsh environment, where thermal actuators ...

Design and Optimization of Gas Sensor Testing Chamber using COMSOL Multiphysics®

K.Govardhan[1], K.Narmada[2], Nirmala Grace[3]
[1]VIT University, MEMS & Sensors Division, School of Electronics Engineering, Vellore, Tamil Nadu, India
[2]VIT University, Sensor System Technology, School of Electronics Engineering, Vellore, Tamil Nadu, India
[3]VIT University, Center for Nanotechnology Research, Vellore, Tamil Nadu, India

This study aims at the design and optimization of a Gas Sensing Chamber. The design takes advantage of the multiphysics simulation capabilities of COMSOL Multiphysics® to incorporate various physics such as CFD, Micro fluidics, Solid Mechanics, Electro thermal effects etc. The optimization needs to be done at multiple levels such as mixture of two gases, arriving laminar flow over the substrate, ...