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Analyze the Hodgkin-Huxley Model with a Computational App

November 10, 2016

In a previous blog post, we discussed the physiological basis of generating action potential in the excitable cells of living organisms. We spoke about the simple Fitzhugh-Nagumo model, which emulates the process of depolarization and repolarization in a cell’s membrane potential. Today, we analyze a more advanced model for simulating action potential, the Hodgkin-Huxley model. We also go over how to use a computational app to streamline this type of analysis.

Students Use Simulation to Optimize Hyperloop for Design Competition

November 8, 2016

Today, we invite guest blogger Bauke Kooger of Delft University of Technology to discuss modeling a magnetic suspension system for the Hyperloop. The Hyperloop is a proposed mode of transportation in which a vehicle, or pod, travels at the speed of sound through a low-pressure tube. At this speed, a magnetic suspension offers several advantages over systems such as air bearings or wheels. To test this, Delft’s Hyperloop team modeled their pod’s magnetic suspension in the COMSOL Multiphysics® software.

Happy Birthday, Marie Curie

November 7, 2016

Marie Curie is a Nobel Prize-winning scientist who was a pioneer in the field of radioactivity, a word she herself coined. Besides her many honorary degrees and memberships in societies across the globe, she is well known for her two Nobel Prizes in physics and chemistry.

How to Use Acoustic Topology Optimization in Your Simulation Studies

November 3, 2016

Today, guest blogger René Christensen of GN Hearing discusses the importance of acoustic topology optimization and how to apply it in COMSOL Multiphysics. Topology optimization is a powerful tool that enables engineers to find optimal solutions to problems related to their applications. Here, we’ll take a closer look at topology optimization as it relates to acoustics and how we optimally distribute acoustic media to obtain a desired response. Several examples will further illustrate the potential of this optimization technique.

COMSOL Conference 2016 Bangalore Award Winners

November 2, 2016

The COMSOL Conference 2016 Bangalore took place on October 20-21, and presenters from across the country came to showcase their simulation work. From modeling the motion of a dragonfly’s flapping wings to the simulation design of piezoelectric energy harvesters, we saw a wide range of exciting poster and presentation topics at this year’s event. Read on to learn about the top posters and papers at the COMSOL Conference 2016 Bangalore.

Optimizing a Tunable Organ Pipe for Ocean Acoustic Tomography

November 1, 2016

Ocean acoustic tomography systems measure temperature using an acoustic signal that travels between two instruments. These systems often need to cover a broad frequency band with low-frequency signals and require a high-power sound source. One option to achieve these goals is a tunable organ pipe, which balances efficiency and functionality. A researcher at the Advanced Technology Group, Teledyne Marine Systems used simulation to improve his tunable organ pipe design and compared the results to experimental tests.

Introduction to Efficiently Modeling Antennas in COMSOL Multiphysics®

October 31, 2016

To keep our antenna modeling process efficient and accurate, we should start with a simple geometry and then gradually add more complex features. The final simulation needs to include enough detail to accurately represent our design, while excluding elements that needlessly increase the computational cost. To demonstrate this, we look at an anechoic chamber example, which is used to characterize antenna performance, before examining how this process applies to several antenna examples available in the COMSOL Multiphysics® software.

Modeling Fatigue Failure in Elastoplastic Materials

October 28, 2016

Imagine bending a metallic paper clip back and forth until, after a few repetitions, it breaks entirely. This is one example of fatigue failure, the most common type of structural collapse. In more severe cases, such failure can lead to collapse or malfunction in structures like car exhaust pipes and aircraft jet engines. To better understand and predict fatigue failure in elastoplastic materials, we can use the COMSOL Multiphysics® software to accurately model both the materials and the fatigue process.


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