Electrical

Walter Frei | July 14, 2014

Whenever modeling magnetic fields in steady-state, transient, or frequency domain with the AC/DC Module, we want to reduce the size of the model as much as possible to minimize the computational resources and time needed to solve the model. Today, we will introduce the three types of symmetry boundary conditions that you can exploit in your modeling and show how to use them.

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Alexandra Foley | July 9, 2014

There are two types of anechoic chambers — acoustic and radio frequency (RF). Here, we explore how periodic structures can be used to help quickly model an RF anechoic chamber by reducing the complexity and computation time of the model.

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Fanny Littmarck | July 7, 2014

There’s a new book out there for those of you who work with or research electromechanical system design. It’s titled Multiphysics Simulation: Electromechanical System Applications and Optimization and is more than your average textbook. This is a reference guide on simulation and topology optimization written with both students and industry engineers in mind.

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Fabian Scheuren | June 23, 2014

One of the main issues with high-power electrical devices is thermal management. Together with BLOCK Transformatoren, we created a model using COMSOL Multiphysics simulation software that encompasses all of the important details when modeling heating of high-power electrical devices. To do so, we had to utilize high performance computing (HPC) with hybrid modeling. Here, we will discuss how to approach this real-life task with the COMSOL software.

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Jennifer Segui | June 19, 2014

It’s likely that you’ve heard or read about many of the exciting discoveries in particle physics research at Fermilab. Powerful particle accelerators, including the Booster synchrotron with its unique ferrite-tuned RF cavities, consistently bring the lab to the forefront of discovery. Upgrading the 40-year-old Booster RF cavities will enable them to produce and sustain particle beams at even higher intensities… but will they overheat? Learn how the engineers at Fermilab address this important design challenge.

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Mark Fowler | June 17, 2014

When you lose power at home, you may use a shaker flashlight to navigate about your house. This type of flashlight relies on voltage produced by electromagnetic induction in order to be powered. How much voltage can one of these flashlights produce, do you think? Here, we find out through computation, using the AC/DC Module.

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Amelia Halliday | June 16, 2014

If you are searching for a tutorial on how to model a miniaturized 3D electromechanics problem, then look no further. We have just published an updated version of our video tutorial on how to simulate a capacitive pressure sensor. COMSOL Multiphysics version 4.4 and the MEMS Module are used to simulate the electrostatic, structural, and thermal physics that occur.

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Mark Fowler | May 21, 2014

Have you ever wondered how a roller coaster or a train is brought to a stop? A braking effect produced by eddy currents is most likely the cause. Today, we’re going to discuss eddy current braking as well as investigate this phenomenon through an example model.

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Fanny Littmarck | May 20, 2014

We like to feature a certain waveguide model in our RF and microwave heating webinars because it illustrates the concept in a way that is easy to understand. Here it is again, serving as a quick intro to modeling RF and microwave heating.

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Mark Fowler | May 19, 2014

If you walked into a particle or nuclear physics center, like the world-renowned CERN, you may come across a magnetic quadrupole lens (after security clearance, I would imagine). Here, we’re going to discuss what magnetic quadrupole lenses are and study the focusing effect three consecutive quadrupole assemblies have on B5+ ions traveling through such a lens.

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Fanny Littmarck | May 15, 2014

Have you been looking for software that can solve the Testing Electromagnetic Analysis Methods (TEAM) Problem 7? We solved the problem with COMSOL Multiphysics and the AC/DC Module. Here are the results.

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