Should I Fillet the Geometry in My Electromagnetic Heating Analysis?

Walter Frei November 30, 2017

To fillet or not to fillet, that is the question (that can bedevil the multiphysics analyst). When building finite element models, sharp edges can lead to local singularities and fields that are nonconvergent with mesh refinement. Rounding off these sharp edges by adding a fillet avoids this singularity. As it turns out, in many multiphysics models, these sharp edges and the resultant singularities do not necessarily negatively affect the results. Let’s find out more.

Ler Mais

Categorias

Caty Fairclough November 29, 2017

You’re driving on the highway as an ambulance goes by, siren blaring. After the ambulance passes your car, you notice that the pitch of the siren suddenly drops. This happens due to the Doppler effect, which is named after physicist and mathematician Christian Doppler.

Ler Mais

Categorias

Rasmus Karlsson November 27, 2017

Wet chemical etching is used to form patterns on surfaces, with applications including the production of integrated circuits, MEMS devices, and pressure sensors. This process has been around for hundreds of years, and was a favorite method of Old Master Rembrandt van Rijn. The optimization of chemical etching was historically a matter of trial and error, but in this blog post, we’ll show how to model the process in the COMSOL Multiphysics® software.

Ler Mais

Brianne Costa November 24, 2017

Magnetic flow meters are a noninvasive option for measuring blood flow. However, when patients move, displaced blood vessels can affect the sensitivity of the flow meter. Researchers from ABB Corporate Research used multiphysics modeling to study how the displacement of blood vessels in a moving patient impacts the performance of a magnetic flow meter.

Ler Mais

Caty Fairclough November 23, 2017

Throughout his lifetime, Johannes Diderik van der Waals worked toward increasing our understanding of liquids and gases. With his groundbreaking work, he made a name for himself in molecular science and earned a Nobel Prize in Physics.

Ler Mais

Categorias

Brianne Costa November 22, 2017

There is a lot we know about the brain, and a lot we don’t. Optogenetics is a relatively new area of study in which light is used to stimulate brain activity and study neurological behavior. Stimulating neurons with light is more precise than electrical stimulation — and safer. Researchers from Massachusetts Institute of Technology (MIT) used simulation to design an optical probe that can be implanted into the brain to stimulate nerve impulses.

Ler Mais

Categorias

Yuhang Qin November 17, 2017

In early November, simulation engineers and professionals from across China gathered at the COMSOL Conference 2017 Beijing. More than 70 guests presented their simulation work during the conference presentation sessions. Attendees voted for their favorite posters and three of them earned Best Poster awards. Read on to learn how these posters stood out among a collection of innovative and inspiring projects.

Ler Mais

Categorias

Gerard Hegemans November 16, 2017

At the COMSOL Conference 2017 Rotterdam, simulation specialists from across Europe (and some from as far away as Chile and South Korea) showcased their innovative research and modeling work. Among the many excellent user presentations, several made a special impression and were recognized with awards. Read on to learn about the top papers and posters from the COMSOL Conference 2017 Rotterdam.

Ler Mais

Categorias

Caty Fairclough November 15, 2017

Einzel lenses are used to focus charged particle beams in cathode ray tubes (CRTs). To properly analyze an einzel lens, we need to study the charged particles in the lens subject to appropriate electrical excitation. Here, we discuss one such example that uses the Particle Tracing Module, an add-on product to the COMSOL Multiphysics® software.

Ler Mais

Caty Fairclough November 10, 2017

Skyscrapers, highway bridges, and other heavy manmade structures often use drilled shafts. Despite their widespread application, these shafts suffer from anomalies due to suboptimal designs and issues with the flow of concrete. To better understand such problems and improve the concreting process for drilled shafts, researchers used the COMSOL Multiphysics® software. Here, we take a peek at their preliminary research and findings.

Ler Mais

Categorias

Ajit Bhuddi November 8, 2017

Suppose you have a very long system with a constant cross section: a fluid-filled pipe. Modeling this system is computationally expensive and time consuming. Using a guided wave propagation approach, you can model a cross section of the system and compute the guided waves along it. You can represent such waves by means of dispersion curves. Here, we discuss a coupled analysis considering air and water as the internal fluids. We also analyze the system dynamics using dispersion curves.

Ler Mais

Categorias


Categorias


Tags

1 13 14 15 16 17 121