Analyzing a Component of the ITER Tokamak with Simulation

Brianne Costa | April 12, 2016

We can solve many of the world’s energy sustainability problems by harnessing the power of the sun through fusion energy. Tokamaks are devices that test the practicality of employing fusion energy on Earth. ITER, which will be the largest tokamak on Earth when complete, has required years of research and a magnitude of resources. Using COMSOL Multiphysics, a group of researchers investigated whether the tritium breeding modules (TBMs) in ITER produce magnetic perturbation that could generate unacceptable plasma losses.

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Peng-Chhay Ung | April 11, 2016

Radiators, refrigerators, and geothermal pumps all need to efficiently extract heat from one fluid to another without mixing them. Among all of the different heat exchanger designs, finned pipes aim to increase the exchange surface between the content of a pipe and the exterior using fins. Finned pipes usually show a geometrical periodicity along the length, which we will take advantage of in this demo app to reduce computational costs.

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Walter Frei | April 6, 2016

Have you ever wanted to write out mesh and analysis data from COMSOL Multiphysics into a text file? You may want to do this when passing information to another software program or even just into a spreadsheet. You often want to customize the exact format in which such data is written, depending upon the needs of the other tools with which you are working. This is very easy to do with the Application Builder. Let’s find out how!

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Alfred Svobodnik | April 4, 2016

Today, we welcome Managing Director Dr. Alfred J. Svobodnik of Konzept-X GmbH, a COMSOL Certified Consultant and developer of multidisciplinary virtually optimized industrial design technology (M-voiD® technology). MP3 players, smartphones, and tablets allow us to listen to our favorite music almost everywhere. While driving in a car, we should also enjoy the highest sound quality. Learn how to use simulation to reproduce sound in one of the most difficult environments — a vehicle — to design better automotive sound systems.

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Walter Frei | March 30, 2016

Whenever solid materials are heated enough, they will melt and then vaporize to a gas. Certain materials will even go directly from the solid to the gas phase, a process referred to as sublimation or ablation. If the material is heated strongly enough, there will be significant material removal. Today, we will look at how you can model this process in COMSOL Multiphysics.

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Bridget Cunningham | March 28, 2016

When you are new to the COMSOL Multiphysics® simulation software, it is important to have access to resources that can help you get started with the software quickly. The installation and introduction manuals provide useful details, covering the basics of the modeling environment as well as some more advanced topics. Starting with version 5.2, the Simplified Chinese installation option now offers access to a number of these manuals in versions that are translated into Chinese.

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Caty Fairclough | April 7, 2016

When it comes to creating the next generation of flat panel displays and solid-state area lighting, organic light-emitting diodes, or OLEDs, may be used to help. While recognized for its various advantages, this emerging technology suffers from some weaknesses that reduce its overall efficiency. One such example is light loss, which is partially caused by the plasmon coupling effect. Looking to reduce the effect’s prominence in OLED devices, researchers from Konica Minolta Laboratory turned to the COMSOL Multiphysics® software.

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Yosuke Mizuyama | April 5, 2016

Physicist and electrical engineer Dennis Gabor invented holography about 70 years ago. Ever since then, the form of optical technology has developed in many different ways. In this blog post, part one in a series, we talk about a specific industrial application of holograms in consumer electronics and demonstrate how to use COMSOL Multiphysics to simulate holograms in a wide spectrum of optical and numerical techniques.

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Caty Fairclough | March 31, 2016

Two professional chefs stand in a classroom, closely observing a soft-boiled egg. What may initially sound like a cooking class is actually part of a physics course offered at the Technische Universiteit Eindhoven (TU/e) in the Netherlands. Using COMSOL Multiphysics, students are investigating the science behind cooking the perfect soft-boiled egg. See how this innovative blend of simulation research and food science is teaching students how to build and test models.

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Angela Straccia | March 29, 2016

Are you solving turbulent flow problems in your CFD analyses? Then you may be familiar with the large computation time that can result from difficulties in finding the numerical solution. Such difficulties are caused by nonlinearities that arise in the turbulence model equations. Viscosity ramping can help decrease the computation time by solving for higher viscosities and using the solutions as initial conditions for the problem at lower viscosities. We’ll show you how to implement this technique in COMSOL Multiphysics.

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Walter Frei | March 24, 2016

In today’s blog post, we will introduce a procedure for thermally modeling a material with hysteresis, which means that the melting temperature is different from the solidification temperature. Such behavior can be modeled by introducing a temperature-dependent specific heat function that is different if the material has been heated or cooled past a certain point. We can implement this behavior in COMSOL Multiphysics via the Previous Solution operator and a little bit of equation-based modeling. Let’s find out how…

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