Analyzing Forced Duffing Oscillations in Metal-Halide Lamps

Bernd Baumann | November 11, 2015

Today, we introduce guest blogger Bernd Baumann, who shares insight into optimizing the performance of metal-halide lamps with simulation, with input from his colleague Joerg Schwieger. With the help of COMSOL Multiphysics, we investigated the impact of acoustic resonances and the related acoustic streaming field on the operation of metal-halide discharge lamps. To our surprise, we found that the lamps exhibit behaviors that are similar to a well-known mechanical system — the forced Duffing oscillator with a softening spring.


Frederic Bernard | November 10, 2015

The COMSOL Conference 2015 Grenoble was a great opportunity for attendees to receive training, network, and learn more about the many applications of COMSOL Multiphysics. The papers and posters presented at this year’s conference covered a wide range of topics and industries, each demonstrating the power of simulation in advancing innovative research. Let’s learn a bit more about the Best Paper and Best Poster award winners.


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Lars Fromme | November 6, 2015

Today, we welcome Lars Fromme back to the blog — this time as a guest blogger from the FH Bielefeld University of Applied Sciences. Working with loud machines is an occupational safety issue in the modern world. To keep workers safe, we can design low-cost solutions to control the noise with the help of simulation. Researchers at the FH Bielefeld University of Applied Sciences set out to do just that by simulating acoustic transfer paths with COMSOL Multiphysics simulation software.


Bridget Cunningham | November 4, 2015

Heat has a powerful effect on the operation and lifespan of electronic devices. Introducing components like heat sinks within these electronic systems helps maintain cooler temperatures and promotes healthy performance. As we demonstrate with our disk-stack heat sink example, simulation is a powerful tool for analyzing the efficiency of heat sink designs.


Emilie Le Douaron | October 29, 2015

The COMSOL Conference recently made its second stop in Grenoble, France. The three-day event brought together more than 300 engineers, researchers, and scientists, giving attendees the opportunity to advance their simulation skills and network with other users and COMSOL staff. We would like to thank everyone who came to the conference, as it was a great success. Here’s a look at some of the photos from the event.


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Brianne Costa | October 27, 2015

Keeping buildings cool in the summer and warm in the winter is a major drain on energy resources. In search of a more cost-effective and energy-efficient way to heat and cool buildings, researchers at Fraunhofer ISE continuously work to develop adsorption-based systems that run on solar energy, natural gas, and industrial waste. Using COMSOL Multiphysics® simulation software, the team investigates the adsorption process, heat exchanger design, and numerous other systems that affect their innovative developments in adsorption technology.


Caty Fairclough | November 9, 2015

Doctors can more effectively treat skin cancer when skin tumors are detected early. While visual examinations are typically used to identify such tumors, noninvasive tools like dielectric probes offer another approach. With COMSOL Multiphysics, we analyze the functionality and safety of a dielectric probe used for skin cancer diagnosis.


Phil Kinnane | November 5, 2015

Cricket is the second most popular sport in the world, but it’s also considered an art. This is seen in the technical abilities required by the batsman to protect his wicket and go on to score runs. It’s also due to the type of bowling used to get the batsman out, which depends on a myriad of physical factors. Here, we investigate one of these techniques — the art of swing bowling.


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Bridget Cunningham | November 3, 2015

Silicon chips have been the foundation of power electronics over the years. However, as more applications are using increasingly higher amounts of electrical power, silicon has begun to reach its limits. Wide band gap semiconductors offer an opportunity to surpass these confines, operating at high frequencies, voltages, and temperatures. Looking to optimize their development of wide band gap solutions, engineers at Wolfspeed utilized the power of the Application Builder within COMSOL Multiphysics.


Bridget Cunningham | October 28, 2015

The first stop of the COMSOL Conference 2015 in Boston featured industry talks by speakers from three companies: GrafTech Innovation and Technology Center, Huawei Canada Research Centre, and AltaSim Technologies. These keynote speeches offered a look at some of the innovative uses of COMSOL Multiphysics, including the Application Builder.


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Caty Fairclough | October 26, 2015

The COMSOL Conference 2015 Boston brought together simulation engineers for three days of hands-on training, user presentations, industry talks, and more. We’d like to share some photos from the event with you — and if you were there, check out the slideshow below to see if you are in any of the pictures.


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