Bettina Schieche | July 22, 2015

You may know of Boreas, the Greek god of North Wind, but did you know that it’s also the name of a German team for Formula 1 in schools? This is no coincidence; it describes their strong will to develop race cars that are “as fast as a storm”. With this spirit and COMSOL Multiphysics, the team won several qualifying races, reached third place in the 2014 world finals, and was honored with the innovation award for Research and Development.

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Walter Frei | July 21, 2015

When modeling a manufacturing process, such as the heating of an object, it is possible for irreversible damage to occur due to a change in temperature. This may even be a desired step in the process. With the Previous Solution operator, we can model such damage in COMSOL Multiphysics. Here, we will look at the “baking off” of a thin coating on a wafer heated by a laser.

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Pankaj Nerikar | July 20, 2015

Corrosion is a widely encountered issue in the automotive industry. To account for and prevent this problem, industry leaders often run experiments to test the corrosion resistance of vehicles. Simulation, however, offers a simplified approach to addressing this phenomenon in automobiles — one that saves time, money, and resources.

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Caty Fairclough | July 17, 2015

Microfluidic systems often rely on valveless pumps, as they are both gentle on the biological material and low in the risk of clogging. However, by design, this type of pump is not suitable for viscous fluids and systems with small length scales or low flow rates. To overcome this limitation, you can introduce a micropump mechanism that converts oscillatory fluid motion into a unidirectional net flow.

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Brianne Costa | July 16, 2015

The ancient Japanese art of origami enables you to create many intricate designs out of folded paper. Recently, researchers drew inspiration from this craft to develop a fully functional battery consisting mostly of paper and water. They found that the simple device generates enough energy to power a biosensor.

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Bridget Cunningham | July 15, 2015

Phase change energy storage is an effective approach to conserving thermal energy in a number of applications. An important element in the efficiency of this storage process is the melting rate of the phase-change material, the storage medium. Using the principle of the constructal law as their foundation, a team of researchers sought to advance the performance of these storage systems.

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Tommy Zavalis | July 14, 2015

Batteries generally operate through numerous processes that depend on even more parameters. How can you find out more about what’s going on within them? One approach is to look at the cell’s electrical impedance. The Lithium-Ion Battery Impedance demo app, available in the Application Gallery, can be used to interpret the impedance of a specific lithium-ion battery design with minimal effort. It can also help parameterize the system, a useful step for setting up accurate time-dependent models in the future.

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William Vetterling | July 9, 2015

Today, we welcome guest blogger William Vetterling of ZINK Imaging to the COMSOL Blog. If you read the 2015 edition of COMSOL News, you may have seen my review of the newly released Application Builder. In that review, I shared an example of a simple thermal model of an IR microscope that we had created a year earlier for use in our laboratory at ZINK Imaging. Now I will share how we turned that model into an app.

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Brianne Costa | July 8, 2015

Solar energy is created by combining sunlight with a semiconducting material, often silicon. But solar, or photovoltaic, cells require such a high-quality silicon that the manufacturing process is complicated and costly. As a photovoltaic material producer and furnace manufacturer, EMIX turned to COMSOL Multiphysics® simulation software to optimize their cold crucible continuous casting (4C) process and create the silicon needed for a more efficient solar-powered world.

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Eric Favre | July 7, 2015

Previously on the blog, we introduced you to the tears of wine phenomenon and its cause — the Marangoni effect. This effect results from a gradient of surface tension at the interface between two phases. In situations where a surface gradient is temperature dependent, the Marangoni effect is referred to as Marangoni convection. Here, we will demonstrate how to analyze Marangoni convection in COMSOL Multiphysics and easily separate effects, such as gravity, in your simulations.

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Ed Fontes | July 6, 2015

Since we released version 5.0 of the COMSOL Multiphysics® software, you have the ability to create simulation apps — either starting from scratch or with a demo app from the Application Library. Today, we’ll introduce you to an app that can be used for understanding and optimizing mixer design and operation for a given fluid. The exemplified application models and simulates stirred tank mixers, which are used for reactors in the fine chemical, pharmaceutical, food, and consumer products industries.

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