See How Multiphysics Simulation Is Used in Research and Development

Engineers, researchers, and scientists across industries use multiphysics simulation to research and develop innovative product designs and processes. Find inspiration in technical papers and presentations they have presented at the COMSOL Conference. Browse the selection below or use the Quick Search tool to find a specific presentation or filter by application area.
View the COMSOL Conference 2018 Collection
AC/DC Electromagneticsx

Finite Element Modeling of a Pulsed Spiral Coil Electromagnetic Acoustic Transducer (EMAT) for the Testing of Plates

R. Dhayalan[1], A. Kumar[2], B. Purnachandra Rao[3], T. Jayakumar[2]
[1]Metallurgy and Material Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, 603 102, TN, India
[2]Nondestructive Evaluation Division, Indira Gandhi Centre for Atomic Research, Kalpakkam, 603 102, TN, India
[3]Ultrasonic Measurements Section, Nondestructive Evaluation Division, Indira Gandhi Centre for Atomic Research, Kalpakkam, 603 102, TN, India

This paper presents numerical simulation of plate wave modes in thin stainless steel plates using a racetrack spiral coil electromagnetic acoustic transducer (EMAT), which works under the principle of acousto-elastic effect, called Lorentz force mechanism. EMATs are useful for non ... Read More

Design of a Dielectrophoretic Based Micropipette for Gene Expression Applications Using COMSOL Multiphysics® Software

D. Wijesinghe [1], K. Nawarathna [1],
[1] Department of Electrical and Computer Engineering, North Dakota State University, Fargo, ND, USA

We have used COMSOL Multiphysics® software to design a micropipette for single -cell gene expression profiling. The micropipette design allows us to insert it into a single-cell to extract genes through dielectrophoresis. As dielectriphoretic force depends on the applied electric field ... Read More

Simulation Analysis of Electromagnetic Compatibility (EMC) of Enclosures

A. Eder [1], D. Hofinger [1], G. Ritzberger [1]
[1]Fronius International GmbH, Research & Development, Wels-Thalheim, Austria

The paper on EMC Simulation Analysis of Enclosures demonstrates a simulation method to analyze the shielding effectiveness of enclosures. From the early development stage on it is possible to analyze the effect of electromagnetic waves on shielding panels. Different types of openings ... Read More

Estudo Numérico da Eletroquimioterapia em Tumor Cutâneo com Diferentes Configurações de Eletrodos new

G. Neves[1], D. Suzuki[1], J. Alvim[1], M. Rangel[2]
[1]Universidade Federal de Santa Catarina, Florianópolis, SC, Brasil
[2]Vet Câncer Oncologia Veterinária, São Paulo, SP, Brasil

A eletroquimioterapia é um tratamento de câncer que utiliza a combinação de agentes quimioterápicos e campos elétricos. A base teórica por trás dessa aplicação é a eletroporação. Esse fenômeno biológico consiste na abertura de poros na membrana celular devido à aplicação de pulsos ... Read More

Simulation and Fabrication of Wireless Passive MEMS Pressure Sensor

E.A. Unigarro Calpa[1], D.A. Sanz Becerra[1], A. Arciniegas[2], F. Ramirez[1], F. Segura-Quijano[1]
[1]Universidad de los Andes, Bogotá, Colombia
[2]Instituto Barraquer de América, Bogotá, Colombia

A wireless passive pressure sensor and the measurement system were design and simulated using COMSOL 4.3. The sensor is based on MEMS capacitor attached to a planar inductor for wireless powering and readout. An external coil is used for the measuring system. The pressure to be measured ... Read More

Impact of Electro-Convection (EC) on Heat Transfer in Liquid-Filled Containers

A. Pokryvailo [1],
[1] Spellman High Voltage Electronics Corporation, Hauppauge, NY, USA

Electric field can bring liquid in motion and thus influence heat transfer. Electro-convection (EC) can be caused by electric forces acting on a liquid, even in absence of space charge. Here, we studied heat transfer in a metal vessel filled by oil, with a submersed high voltage ... Read More

Green's Function Approach to Efficient 3D Electrostatics of Multi-Scale Problems

C. Roman [1], L. Schmid [1], L. Stolpmann [1], C. Hierold [1],
[1] ETH, Zurich, Switzerland

We present an efficient method to compute efficiently the general solution (Green's Function) of the Poisson Equation in 3D. The method proves its effectiveness when dealing with multi-scale problems in which lower dimensional objects, such as nanotubes or nanowires (1D), are embedded in ... Read More

Multiphysics Process Simulation of the Electromagnetic-Supported High Power Laser Beam Welding of Austenitic Stainless Steel

M. Bachmann[1], V. Avilov[1], A. Gumenyuk[1], M. Rethmeier[1]
[1]BAM Federal Institute for Materials Research and Testing, Berlin, Germany

The application of an oscillating magnetic field on the high-power full-penetration laser beam welding process of a 20 mm thick stainless steel plate was numerically and experimentally investigated. In the simulations, three-dimensional heat transfer and fluid dynamics as well as ... Read More

Effect of Electrical Field Distortion on Particle-Particle Interaction Under DEP

G. Zhang[1], Y. Zhao[1], J. Hodge[1], J. Brcka[2], J. Faguet[2], E. Lee[2]
[1]Clemson University, Clemson, SC, USA
[2]TEL U.S. Holdings, Inc., U.S. Technology Development Center, Austin, TX, USA

In using DEP for particle manipulation, researchers often use a formula to calculate the DEP forces in which the forces are proportional to the particle radius to the third power. This formula assumes that the electrical field, E, will not be affected by the presence of a particle, no ... Read More

3D Multiphysics Modeling of Bulk High-Temperature Superconductors for Use as Trapped Field Magnets new

M. Ainslie[1], J. Zou[1], D. Hu[1], D. Cardwell[1]
[1]Department of Engineering, University of Cambridge, Cambridge, UK

The authors are currently investigating the use of bulk high temperature superconductors as trapped field magnets (TFMs) in order to increase the electrical and magnetic loading of an axial gap, trapped flux-type superconducting electric machine. In electric machines, the use of ... Read More