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.
COMSOL-News-Magazine-2017
COMSOL-News-Magazine-2017-Special-edition-acoustics
COMSOL News Magazine 2017

Using COMSOL for Optimal Design of Engineering Barriers of Nuclear Waste Repositories

L.M. de Vries[1], A. Nardi[1], A.E. Idiart[1], P. Trinchero[1], J. Molinero[1], F. Vahlund[2], H. von Schenck[2]
[1]Amphos 21, Barcelona, Spain
[2]Swedish Nuclear Fuel and Waste Management, Stockholm, Sweden

The Swedish Nuclear Fuel and Waste Management Co (SKB) is responsible for final disposal of spent fuel and radioactive waste. SKB operates SFR, an underground waste repository in crystalline rock. The evolution of groundwater flow within the repository needs to be estimated considering different options for the design of the engineered barriers. The goal is to predict the effects of flow and ...

Modeling the Collimator-Detector Scattering Using Stochastic Differential Equations and COMSOL

A. Jeremic[1], T. Farncombe[2], S. Liu[2], and Y. Abdul-Rehman[1]
[1]Department of Electrical and Computer Engineering, McMaster University, Hamilton, Ontario, Canada
[2]Department of Radiology, McMaster University, Hamilton, Ontario, Canada

Single photon emission computed tomography (SPECT) is a nuclear medicine imaging technique that uses gamma rays. It has been especially useful for bone scans, cardiac perfusion imaging, tumor scans and brain imaging. The main advantage of SPECT imaging is that it can target particular tissue receptors allowing one to focus on the imaging of the diseased tissue. In most cases Monte Carlo ...

Modeling Dispersal of Genetic Information in Structured Agricultural Landscapes with Partial Differential Equations

K. Lipsius, and O. Richter
Institute of Geoecology, TU Braunschweig, Germany

We present a model for plant dispersal in agricultural landscapes to evaluate the gene dispersal from genetically modified (GM) plants. Dispersal from seed and pollen is modeled with partial differential equations. In scenarios, we investigated the effect of roadside application of non-selective herbicides on dispersal of herbicide tolerant oilseed rape (HT OSR). We showed that OSR growing on ...

Making Cartograms and Using them for Data Acquisition

P. Mercure[1], and R. Haley[2]
[1]The Dow Chemical Company, Midland, MI
[2]ATM Research, Midland, MI

We demonstrate cartogram construction, where a geographical map is distorted to represent some measure, for example population, while trying to keep the shape of regions recognizable. We then apply this cartogram construction technique to optimize thermocouple locations. A heat generation and conduction model is used initialize the cartogram construction algorithm. A uniform distribution of ...

Determination of NFC-Antenna Operating Distance by COMSOL Multiphysics® Simulation of Planar Transformer Modeling - new

A. K. Palit [1],
[1] ZF-Lemförder Electronic GmbH, Espelkamp, Germany

Although the Near Field Communication (NFC) concept has been developed for the short distance communication between the NFC-reader antenna and transponder/Tag, yet the requirements of different Automotive OEMs vary drastically. For instance, for the keyless entry into the car based on capacitive type sensor in door handle project which consists of a rectangular NFC-reader antenna of size 80mm x ...

Simulation Methods on Virtual Laboratories for Characterization of Functionalized Nanostructures - new

E. Lacatus [1], G. C. Alecu [2], A. Tudor [3], M. Sopronyi [4],
[1] Polytechnic University of Bucharest, Bucharest, Romania
[2] Groupe Renault, Bucharest, Romania
[3] STAR STORAGE,Bucharest, Romania
[4] National Institute for Laser, Plasma and Radiation Physics, Magurele, Romania
[5] Polytechnic University of Bucharest, Bucharest, Romania

Within the emerging integrative concept of IoT (Internet of Things) and IIoT (Industrial Internet of Things) that are paving the way towards Digital Manufacturing Technologies and the next paradigm shift of Industry 4.0, R&D Laboratories have to be at the forefront of the transformation. Using remotely the existing top R&D Laboratories facilities would become soon common practice, but for now ...

A General Method for Solving Equations - The Dynamical Functional Particle Method

M. Gulliksson, and S. Edvardsson
Mid Sweden University, Sundsvall, Sweden

Given any equation L(u)=0, e.g. a partial differential equation, it can be considered to be the stationary solution of a time dependent equation (in fact, time need only to be fictitious time not real time). Our approach is to choose the time dependence in analogy with an oscillating particle system including damping in order to damp out the time derivatives and attain a stationary solution ...

Simulation of Slag/Gas and Slag/Iron Interface Tilting in Blast Furnace Hearth During Slag Tapping - new

Y. Kaymak [1], T. Hauck [1], R. Lin [2] , H. Rausch [2]
[1] VDEh Betriebsforschungsinstitute GmbH, Düsseldorf, Germany
[2] AG der Dillinger Hüttenwerke, Dillingen, Germany

The blast furnace hearth drainage constitutes a major part of the blast furnace operation. Especially, keeping track of the iron and slag levels is crucial to adapt the tapping strategy. The operational target is usually not only to empty the blast furnace as far as possible but also to keep the slag below a critical level to prevent flooding of the tuyeres where the hot blast is injected into ...

Validation of COMSOL Multiphysics® for PWR Power Distribution via 3D IAEA PWR Benchmark Problem - new

A. Y. Soliman [1],
[1] Department of Nuclear Engineering, King Abdulaziz University, Jeddah, Saudi Arabia Kingdom

Design of the Pressurized Water Reactors (PWRs) involves extensive calculations to verify the reactor safety criteria such as power peaking factor during the reactor lifetime. Coupling of neutronic calculations, thermal hydraulic calculations and other reactor phenomena requires a multiphysics software to model the different reactor equations and solve it simultaneously without the need to use ...

Modal Analysis of Rotating Machines - new

C. Frankrone [1], L. Fromme [1],
[1] Department of Engineering Sciences and Mathematics, Bielefeld University of Applied Sciences, Bielefeld, Germany

Machines with rotating components are prone to vibrations because an imbalance of the rotor would always act as a harmonic excitation force to the machine. Thus oscillations close to the natural frequencies are tried to pass through fast in the run-up and cast-down or even completely avoided for higher structural frequencies. Nevertheless vibrations still occur and affect the design of the ...