How to Choose Between Boundary Conditions for Coil Modeling

Walter Frei | March 22, 2016

Whenever you are modeling coils with the AC/DC Module in COMSOL Multiphysics, you need to consider what type of boundary conditions to use to truncate your modeling domain. In this blog post, we will introduce the different boundary conditions that you can use and how to choose between them.


Caty Fairclough | March 21, 2016

When designing tall, slender truss towers topped with heavy loads, engineers may want to account for buckling. This requires calculating the critical compressive load of the structure at hand. Simulation is a time- and cost-efficient way to generate such results. Now, with simulation apps, this process is becoming even faster. Those without simulation expertise can easily run their own tests to calculate the critical compressive load for different truss tower configurations.

Walter Frei | March 16, 2016

Thermal curing is the process of temperature-induced chemical change in a material, such as the polymerization of a thermoset resin. This process is relevant, for example, when a precursor resin is heated and hardens during the manufacturing of composites. You can often assume that the material does not flow during curing, which simplifies the analysis. Thermal curing is very easy to model within the core functionality of COMSOL Multiphysics, as we will show in this blog post.

Abbie Weingaertner | March 14, 2016

Geothermal heat pumps offer an environmentally friendly option for heating modern, well-insulated homes. Oftentimes, many configurations are explored before deciding on the most effective ground heat recovery system. Simulation tools like COMSOL Multiphysics can be used to analyze different iterations to ensure an optimal final design. With the introduction of easy-to-use simulation apps, such modifications no longer require the skills of a simulation expert. Instead, colleagues can investigate design changes, run their own simulations, and evaluate results.

Amlan Barua | March 9, 2016

Pressure vessels are designed to confine liquids or gases. These containers are used in nuclear plants, throughout the chemical and petroleum industries, and even as water heaters in homes. In principle, the vessels’ internal pressure is much higher (or sometimes lower) than the ambient pressure, so the vessels must be carefully designed, as failure can result in severe damage. Today, we’ll show you how to use the Application Builder in COMSOL Multiphysics to create an efficient and accurate design workflow.

Bridget Cunningham | March 7, 2016

Mildred Dresselhaus has been an influential figure in science and engineering for many years. She is recognized as a driving force behind innovative research in the field of carbon science, among other areas, and an influential supporter of female leadership and development in physics and other traditionally male-dominated fields. Today, we celebrate “the queen of carbon science”, highlighting her many achievements in both science and education as well as her encouragement for women in science, technology, engineering, and mathematics (STEM).


Fabrice Schlegel | March 17, 2016

When you think of a stout beer, one type that may come to mind is Guinness® beer. This stout is very special, noticeable by its dark body and famous white head. The dynamics of the foam alone are interesting enough to write a series of blog posts about. Although I don’t drink Guinness® beer (I’m a fan of IPA), I found the longstanding debate about whether its bubbles are rising or sinking while the beer settles makes an interesting simulation.


Linus Andersson | March 15, 2016

Over the 10th through 18th centuries, the sound holes in violins evolved from a circular shape to an elongated f shape. In a recent research paper, MIT scientists and violin makers from the North Bennet Street School in Boston investigated the effects of this change in shape. They suggest that the f-shaped holes increase the air flow, making the bass notes of the violin twice as loud. Today, we will reproduce their findings with COMSOL Multiphysics.


Cesare Tozzo | March 10, 2016

Characterizing magnetic behavior is crucial when designing magnetic devices involving ferromagnetic materials. Different materials (or the same material after certain processes) can react differently to the same stimulus and improper characterization can cause device failure. COMSOL Multiphysics® software version 5.2 expands the current support for describing magnetic materials and defines access to material models through external routines. Here, we demonstrate how this new functionality works in a case featuring hysteresis and review the current opportunities for modeling ferromagnetic materials.


Walter Frei | March 8, 2016

Have you ever had a set of nonuniformly distributed points in a Cartesian plane that sample a surface height, such as points on the contours of a map or data points representing some material property data? If so, you probably also wanted to reconstruct, or interpolate, a continuous and smooth surface between these points. You can construct such a surface using the core capabilities of COMSOL Multiphysics by using Radial Basis Functions. Let’s find out how…

Walter Frei | March 3, 2016

One of the most common uses of the AC/DC Module is for modeling electromagnetic coils and the interactions with their surroundings. Today, we will look into one of the key concepts to keep in mind when modeling coils: closing the current loop. If your work involves modeling coils, you will need a complete understanding of this topic.


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