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Additional Users Stories can be found in the 2013 edition of COMSOL News. Download a PDF version or view it now in your Browser.

Numerical Simulation-Based Topology Optimization Leads to Better Cooling of Electronic Components in Toyota Hybrid Vehicles

Toyota Research Institute of North America, MI, USA

The Toyota Research Institute in Ann Arbor drives cutting-edge research in energy efficiency, mobility infrastructure, and safety. Here, Ercan Dede and his team are designing heat sinks (or cold plates), which are affixed to fragile electrical systems and other applications in Toyota’s hybrid vehicles. Their simulations simulate the cold plate’s topology for improved cooling efficiency ...

Modeling Optimizes a Piezoelectric Energy Harvester Used in Car Tires

Alexander Frey and Ingo Kuehne
Siemens Corporate Technology, Munich, Germany

Siemens is a technology company working with electronics and electrical engineering in industry, energy, and healthcare. Researchers at Siemens Corporate Technology are experimenting with an energy harvesting MEMS (Micro Electro-Mechanical System) generator. In collaboration with Continental AG, they are designing a MEMS device for use as a Tire Pressure Monitoring System (TPMS). The movement of ...

Current Transformer Design That Combines Finite Element Analysis and Electric Circuit Simulation

Dr. Rolf Disselnkötter
ABB AG, Ladenburg, Germany

Transformers have been around for quite a while but their fundamentals are still being investigated by ABB in Ladenburgh, Germany. The ABB Corporate Research Centre is currently developing sophisticated magnetic sensors, using finite element analysis (FEA) to investigate the way in which external electrical sources and loads impact a magnetic subsystem like a transformer core. Their goal is to ...

Wind Turbine Noise Reduction

Xi Engineering Consultants Ltd, Edinburgh, UK

Xi Engineering Consultants Ltd specializes in complex vibration issues, like those caused by wind turbines. The meshing of teeth within the gearbox of a wind turbine can cause great vibrations which are perceived as excessive noise. This presents a problem as there are strict regulatory standards throughout Europe and North America limiting permissible noise from these structures. Studying the ...

Keeping LEDs Cool Gets More Manageable Through Simulation

Aulis Tuominen and Mika Maaspuro
University of Turku
Turku, Finland

Toni Lopez
Philips Research
Eindhoven, The Netherlands

Sami Yllikäinen
Hella Lighting Finland Oy
Salo, Finland

Raimo Laitinen
Helvar Oy Ab
Karkkila, Finland

Light-emitting diodes (LEDs) offer many benefits over incandescent lighting, such as long life spans and high luminous efficiency, and they are environmentally friendly. One of the drawbacks, however, is that LEDs need to operate at the lowest possible temperatures and this must be carefully regulated. Researchers at Business and Innovation Development Technology at the University of Turku in ...

MRI Tumor-Tracked Cancer Treatment

Gino Fallone and colleagues
Cross Cancer Institute
Edmonton, AB, Canada

Radiation therapy targeting in cancer treatment involves many uncertainties, including the movement of targeted sites due to breathing and the like. Magnetic resonance imaging (MRI) can accurately identify the location of a tumor in soft tissue, but unfortunately its magnetic field can interfere with radiation treatment delivered by a linear particle accelerator (Linac). A team of researchers at ...

Multiphysics Simulation Helps Miele to Optimize Induction Stove Designs

Christian Schröder
mieletec FH Bielefeld
Germany

Holger Ernst
Miele
Germany

The induction stove was designed to meet a consumer need for better precision and speed than traditional stoves. Designers were tasked with improving the energy efficiency of the induction coils-stovepot interaction considering both the thermal and electromagnetics of the system. Miele, a world leader in domestic appliances and commercial machines, along with researchers from mieletec FH ...

Picking the Pattern for a Stealth Antenna

F. De Vita, S. Di Marco, F. Costa and P. Turchi
Altran, Italy

Stealth airplanes and ships avoid radar detection by optimizing the shape of surfaces to reflect away from the radar source or absorb its energy. Yet, if a ship or aircraft’s antenna for communication purposes is to operate properly, it cannot be completely covered up. This makes it one of the remaining components with a large radar cross section and can essentially destroy the overall ...

Sonar Dome Vibration Analysis

Francesca Magionesi
INSEAN
Italy

There has been a recent move towards utilizing bulbous bows on ships to house different types of sonar systems, but it is not definite how much structural vibration might interfere with the functioning of a transducer array inside the sonar dome. INSEAN, the National Institute for Studies and Experiments of Naval Architecture in Italy, needed a way to simulate what is happening when the turbulent ...

Upgrading the Nuts and Bolts of the Electrical Grid for a New Generation

Göran Eriksson
ABB AB Corporate Research Power Technologies
Västerås, Sweden

Lukas Graber, Mikael Steurer, and Tim Chiocchio
Center for Advanced Power Systems
Florida State University
Tallahassee, FL

Bruker Energy & Supercon Technologies
Billerica, MA

Migrating the electrical grid to a “smart grid” is usually discussed in terms of IT issues or embedded systems. Yet, just as important updating the “nuts and bolts” of the smart grid. At ABB AB Corporate Research Power Technologies in Sweden, scientists are working to reduce line current and the resulting resistive loss in cables caused by the use of increased voltage in modern ...

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