How to Use Job Sequences to Save Data After Solving Your Model

Bjorn Sjodin June 21, 2017

Little-known functionality of the Study node is its ability to perform a programmatic sequence of operations, including solving; saving the model to file; and generating and exporting plot groups, results, and images. In this blog post, we take a closer look at this capability. If you use the COMSOL Multiphysics® software, there is a good chance you will find this information useful in your modeling work.

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Bjorn Sjodin June 20, 2017

You can generate and visualize randomized material data with specified statistical properties determined by a spectral density distribution by using the tools available under the Results node in the COMSOL Multiphysics® software. In this blog post, we show examples that are quite general and have potential uses in many application areas, including heat transfer, structural mechanics, subsurface flow, and more.

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Caty Fairclough June 19, 2017

Vertical-axis wind turbines (VAWTs) offer many advantages over the more traditional horizontal-axis wind turbines (HAWTs). Still, VAWTs come with their own set of challenges, including low peak efficiency. One way to address these issues is by using pitch control systems, which can be optimized to improve the efficiency and energy generation of VAWTs. Let’s explore simulation research into optimizing an airfoil pitch control system for a VAWT via the COMSOL Multiphysics® software and add-on CFD Module.

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Yosuke Mizuyama June 15, 2017

The laser is one of the most useful inventions in modern science, but it is not an easy device to use. Lasers work only when the cavity mirrors are aligned perfectly. Even if a laser is lasing for a while, it can stop all of a sudden. In today’s blog post, we will talk about how to predict laser stability using the ray tracing capabilities in the COMSOL Multiphysics® software.

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Claire Bost June 14, 2017

When ambient air flows through porous media, it carries moisture. In this process, temperature and moisture are coupled: The vapor saturates depending on the temperature conditions, while latent heat effects due to evaporation and condensation modify the temperature. We discussed heat and moisture transport in air in a previous blog post. Let’s address the specific transport processes we need to consider in pores and how to model heat and moisture transport in porous media with the COMSOL Multiphysics® software.

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Yosuke Mizuyama June 13, 2017

Ray tracing is an effective tool for high-frequency optics simulations. The Ray Optics Module for the COMSOL Multiphysics® software uses a multiphysics-capable wavefront method for its ray tracing. In this blog post, we’ll explore what makes the ray tracing algorithm in COMSOL Multiphysics distinct from traditional ray tracing algorithms described in standard geometrical optics textbooks and suggest a series of best practices to help you get the most out of your simulation results.

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Bridget Cunningham June 12, 2017

In the last seven years, the output of the manufacturing industry has increased by a total of around 10–20%. This growth is partly thanks to technologies and processes that save on time and costs, such as 3D printing and, as is described here, powder compaction. To model this process, we can use the new porous plasticity models in the latest version of the COMSOL Multiphysics® software.

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Claire Bost June 9, 2017

Whenever ambient air is considered in an engineering context, temperature and moisture are intrinsically related. Vapor reaches a saturation point depending on the temperature and pressure conditions, while the action of latent heat modifies temperature distribution. These phenomena must be considered to optimize processes affected by phase changes, particularly when trying to prevent condensation occurring in devices. Let’s see how to model heat and moisture transport in air with the COMSOL Multiphysics® software.

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Bridget Paulus June 8, 2017

Solar-grade silicon is becoming more popular for applications such as communications and photovoltaics. While it’s important to keep up with this growing demand, the current method of producing solar-grade silicon is energy intensive and expensive. To find a more efficient process, researchers at JPM Silicon GmbH explored a novel method using a microwave furnace. By simulating the internal processes, they aim to optimize their microwave furnace design to produce low-cost solar-grade silicon.

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Sven Friedel June 7, 2017

Capacitance calculations in the COMSOL Multiphysics® software seem easy. If you only have two conductors, the recipe is simple: Take one conductor and set it to grounded, set the other as a terminal, and compute the solution. Then, a built-in variable delivers the capacitance. But what if you have more than two conductors, like in touchscreens, transmission lines, and capacitive sensors? If standard textbook terminology has you lost, follow along with this working example of calculating a capacitance matrix.

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Walter Frei June 6, 2017

Whenever light is incident on a dielectric material, like glass, part of the light is transmitted while another part is reflected. Sometimes, we add a metal coating, such as gold, which alters the transmittance and reflectance as well as leads to some absorption of light. The dielectric surface and the metal coating also often have some random variations in height and thickness. In this blog post, we will introduce and develop a computational model for this situation.

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