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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.

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Remote Sensing of Electromagnetically Penetrable Objects: Landmine and IED Detection

R. Eze [1], G. Sivulka [2], ,
[1] City University of New York - LaGuardia Community College, Long Island City, NY, USA
[2] Regis High School, New York, NY, USA

The detection, characterization, and classification of underground environmental hazardous objects [mines, IEDs, and other unexploded military hardware] is a worldwide problem that needs urgent attention and solution. While electromagnetic sensor technologies have been applied to ... Read More

Numerical study of the free surface in silicon melting by Cold crucible technique

S.Al Radi¹, R.Ernst, H.Abouchi, E.Favre and K. Zaidat¹
¹Grenoble Alpes University, SIMAP, St Martin d'Hères, France

Currently in the semiconductor industry more than 80% of silicon crystal are grown by the Czochralski (Cz) method. In this method, fused silica (SiO2) crucibles and graphite heaters are used inside furnaces. The surface of the crucibles, which are in contact with the molten silicon, is ... Read More

Simulation of Vector Mode Grating Coupler Interfaces for Integrated Optics

C. T. Nadovich [1],
[1] Lafayette College, Easton, PA, USA

The use of grating couplers to couple conventionally phased and polarized light near vertically in and out of optical slab or film waveguides [1] represents an attractive method to interface optical fiber to photonic ICs. Previously developed grating coupler designs use transversely ... Read More

Calculating Impedance of a Common Mode Choke in High Frequency Regime

J. Lin [1],
[1] Pitotech Co. Ltd., Changhua City, Taiwan

Common mode chokes are good EMI filters in electronic power systems [1]. For such devices, values for their impedance are critical to their performances as noise filters. In this study, a two-step finite element approach is employed to study the impedance variations of a ferrite-core ... Read More

Enhanced Spontaneous Emission in Plasmonic Nanostructures

Jun Yi [1], Song-Yuan Ding [2],
[1] State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China
[2] Collaborative Innovation Center of Chemistry for Energy Materials, Xiamen University, Xiamen, China

Spontaneous emission -- an electron in an excited state of an emitter spontaneously decays to another state with lower energy -- plays an important role in determining the performance of light-emitting diodes, fluorescent dyes, colorants, solar cells, etc. The efficiency of spontaneous ... Read More

Comparison and Optimization of MRF Dampers Performance with Different Piston Coil Winding Orientation using COMSOL Multiphysics®

P. Singh[1], S. Panda[2]
[1]Indian Institute of Technology (BHU), Varanasi, India
[2]IIT (BHU), Varanasi, India

Undesirable shocks and vibrations are a noteworthy issue in numerous human exercises and domains. Therefore, various damping techniques are used to minimise vibrations, can be classified as active, Semi-active and passive damping. The development of semi-actively controlled ... Read More

EM Design and Analysis of Antenna Enclosed Ground-Based Radome

R. N.[1], S. Durgesh[1], B. Choudhury[1], R. Nair[1]
[1]CSIR-NATIONAL AEROSPACE LABORATORIES, India

Radome is a dielectric Electromagnetic (EM) transparent structure that encloses antenna and protects from various environmental conditions. The advancements in the field of high performance antennas increase the challenges in EM design and analysis of radome. The presence of radome ... Read More

Propagation of Radio Signals Over the Sea Surface

K. Koppenhoefer[1], J. Crompton[1], S. Yushanov[1]
[1]AltaSim Technologies, USA

Propagation of radio signals can be significantly affected by the characteristics of the medium in which they travel such that the properties of the propagation path affect both the level and quality of the received signal as well as the distance over which signals can be reliably ... Read More

Simulation of a Rotary Magnetorheological Damper

D. Harder [1], L. Fromme [1], R. Naumann [2],
[1] University of Applied Sciences Bielefeld, Department of Engineering Sciences and Mathematics, Bielefeld, Germany
[2] University of Applied Sciences Bielefeld, ISyM – Institute of System Dynamics and Mechatronics, Bielefeld, Germany

This paper presents a simulation model of a rotary damper filled with a magnetorheological fluid (MRF). The most important characteristic of the MRF is the variable viscosity, which can be controlled by an external magnetic field. In the simulation model, the fluid is described as a ... Read More

Using COMSOL® for the Development of the UK’s Second Hyperloop Prototype

A. Jocas [1], I. C. H, Chan [1], A. Malekos [1], H. P. Chan [1],
[1] The University of Edinburgh, UK

Hyperloop is a future concept of mass transportation proposed by Elon Musk. It uses electromagnetic propulsion to accelerate a passenger or cargo pod through a low-pressure tube. HYPED, the University of Edinburgh’s Hyperloop Team has created a prototype that uses linear halbach arrays ... Read More

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