Electrical

Jiyoun Munn | May 4, 2015

What if you could enable non-experts to run your multiphysics simulations on their own? You would save time, for sure, and they would get easy access to your expertise. Turning your simulations into apps with customized and easy-to-use interfaces is now a reality. Here, I will explain why you should start creating apps and how to go about it. We’ll use the new Corrugated Circular Horn Antenna Simulator demo app to guide us.

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Andrea Ferrario | April 30, 2015

Electrical machines are an important pillar in modern industrial society. Among the different types of electrical machines, rotating machines such as generators and motors take up a central role. The Rotating Machinery, Magnetic physics interface in COMSOL Multiphysics is designed specifically for modeling these systems. Follow along as we explore how to model rotating machinery and detail best practices for working with this feature.

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Brianne Costa | April 29, 2015

As communication systems in aviation become more complex, multiple antennas are often placed on the same airplane. This creates crosstalk, or cosite interference, which occurs between the antennas and can disturb the operation of the aircraft. In this tutorial model, new with COMSOL Multiphysics version 5.1, we simulate the interference between two identical antennas — one transmitting and one receiving — on an airplane’s fuselage to analyze the crosstalk effect.

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Fanny Littmarck | April 20, 2015

COMSOL Multiphysics version 5.1 introduces a new tutorial model of a UHF RFID tag. RFID tags allow you to identify and monitor both inanimate objects and living creatures through the use of electromagnetic fields. The UHF RFID tag has a wider range than other types of RFID tags and is often used to identify animals. We can evaluate the performance of the tag through an analysis of the electric field and far-field radiation pattern.

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Annette Meiners | April 8, 2015

In a previous blog post, we introduced readers to different kinds of electron energy distribution functions (EEDFs) and their importance in plasma modeling. Today, we focus our attention on the Boltzmann Equation, Two-Term Approximation interface, demonstrating its use with an example from our Model Library.

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Caty Fairclough | March 25, 2015

The Vivaldi antenna, also known as the tapered slot antenna (TSA), is an ideal antenna for wide-band applications. It stands out due to its uncomplicated structure, simple manufacturing requirements, and high gain. When working on a Vivaldi antenna design, we can use simulation software to evaluate its far-field pattern and impedance.

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Bridget Cunningham | March 20, 2015

COMSOL Multiphysics version 5.0 introduced users to a new background field feature designed for linearly polarized plane waves. Explore the use of this new feature with an example of polarization-dependent scattering from our Model Gallery.

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Walter Frei | March 9, 2015

When using the COMSOL Multiphysics software to simulate wave electromagnetics problems in the frequency domain, there are several options for modeling boundaries through which a propagating electromagnetic wave will pass without reflection. Here, we will look at the Lumped Port boundary condition available in the RF Module and the Port boundary condition, which is available in both the RF Module and the Wave Optics Module.

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Bridget Cunningham | March 5, 2015

COMSOL Multiphysics version 5.0 introduced users to an improved “Numeric TEM port” feature for transmission lines. This feature includes enhanced functionality, utilizing the techniques behind the calculation of impedance in 2D models and applying them in 3D instances.

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Alexandra Foley | February 12, 2015

In the paper “Degeneracy Breaking, Modal Symmetry and MEMS Biosensors”, which was presented at the COMSOL Conference 2013 in Rotterdam, researchers experiment with using material and geometric symmetry breaking to design a MEMS biosensor.

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Annette Meiners | February 10, 2015

Plasmas can exhibit a large variety of properties. There are plasmas with high and low ionization degrees, as well as those with high and low pressures and hot and cold temperatures. Different equations and modeling approaches are necessary for each kind of plasma. This blog post gives an overview of the different plasma types and shows when to use which of the interfaces available in the Plasma Module.

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