Capturing Eddy Current Losses in a Permanent Magnet Motor Design

Bridget Cunningham May 4, 2017

Permanent magnet motors are useful in various high-end applications, but they come with design limitations. One example is their sensitivity to high temperatures, which can result from heat losses generated by currents — specifically, eddy currents. Version 5.3 of the COMSOL® software includes functionality to capture eddy current losses in the permanent magnets of such motors. Engineers can use these results to better understand the full behavior of permanent magnet motors and identify ways to optimize their performance.

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Bridget Cunningham May 3, 2017

For many mechanical contact problems, stick-slip friction transition is an important point of analysis. When present, this phenomenon influences the stresses, strains, and deformations near the contact area between the two bodies. In version 5.3 of the COMSOL Multiphysics® software, we have the tools necessary to handle this type of mechanical contact problem and validate the results. With a better understanding of stick-slip friction transition and its subsequent effects, we can improve the safety and energy efficiency of relative systems.

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Christopher Boucher May 2, 2017

The release of version 5.3 of the COMSOL Multiphysics® software includes a new Ray Termination feature to simplify the setup and results analysis for optical simulations with the Ray Optics Module. Use the Ray Termination feature to remove rays that are no longer relevant to the solution, either because they have escaped from the geometry or their intensity is negligibly small. In this blog post, we’ll learn how to use this feature and see how it simplifies ray optics simulation.

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Brianne Costa May 1, 2017

We thrive on the ability to stay constantly connected to the rest of the world through technology. But there are times when our devices hold us back, distracting us when we should be working on an important project or connecting with friends over dinner. Fortunately, a device that was first theorized over 200 years ago — the Faraday cage — offers a way to take ourselves offline, if only for a little while.

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Walter Frei April 28, 2017

Whenever we have a heated or cooled part exposed to air, there is some transfer of heat from the part to the air via convection. The movement of the air can be either forced, via a fan, or free, as a result of the natural buoyancy variations due to changes in the air temperature. Today, we will look at several different ways of modeling these types of convection in the COMSOL Multiphysics® software.

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Caty Fairclough April 27, 2017

When analyzing semiconductor devices, it is important to account for the multiple physics affecting their performance. The Semiconductor Module — an add-on product to the COMSOL Multiphysics® software — can help you model these complex devices. In this blog post, we discuss a new tutorial model of a 1D silicon solar cell, which is available with the latest release of the COMSOL® software, version 5.3.

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Bridget Cunningham April 26, 2017

Sometimes when you bake a cake, it doesn’t turn out how you expected. Part of this is due to the underlying heat and mass transfer phenomena that occur within the baking process, which affect the end result. With tools like the COMSOL Multiphysics® software, you can study and predict how these mechanisms work and use this knowledge to bake a better cake.

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Fanny Littmarck April 25, 2017

Ready to speed up your modeling? Today, we released a new version of the COMSOL Multiphysics® software and COMSOL Server™, version 5.3, and we think you’ll love the performance improvements.

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Bridget Cunningham April 24, 2017

Due to the complex pumping scheme of high-power CO2 lasers, there are many species and collisions to consider in their analysis. This makes modeling plasma behavior in these devices — a key element in their optimization — a challenging task. Applying a multilevel approach, one researcher used the COMSOL Multiphysics® software to create a full 3D model of planar discharge in a CO2 laser. The results showcase the homogeneity of the discharge while offering further potential for optimizing laser designs.

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Walter Frei April 20, 2017

When designing electromagnetic coils, we may want to adjust the position of the coils to achieve a desired magnetic field strength within a particular region of space. This is possible to do within the COMSOL Multiphysics® software by using the add-on AC/DC Module and Optimization Module to combine parameter and shape optimization. Let’s find out how.

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Caty Fairclough April 19, 2017

Human-powered vehicles like tricycles can provide a sustainable alternative to passenger vehicles and help riders avoid traffic in populated areas. Before a tricycle design is ready to roll, it needs to be optimized to meet safety requirements, which can prove difficult due to the complex structure of the tricycle. To efficiently pinpoint weak areas in a tricycle frame design, a research team used the Structural Mechanics Module with the COMSOL Multiphysics® software.

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