Digital Twins and Model-Based Battery Design

Ed Fontes February 20, 2019

We’ve already determined that the concept of digital twins is more than just hype. In this blog post, we discuss how high-fidelity multiphysics models can be combined with lightweight models and measured data to create digital twins that can be used to understand, predict, optimize, and control the real system and the model of the real system. This is exemplified with a battery pack for hybrid vehicles.

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Ed Fontes February 19, 2019

Is the term “digital twin” just hype, or a trick to get a new angle to sell modeling software? In this blog post, we discuss the difference between models, applications, and digital twins. We conclude that although the term has been misused to a certain extent (in relation to the original formulation), there is substance behind it.

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Thomas Forrister February 6, 2019

A doctor sits down and discusses treatment options with a patient that has coronary artery disease. Typically, a stenting procedure is used to increase blood flow to the heart, but there are complications: The arteries around this patient’s heart have an atypical anatomy. Fortunately, there are self-expanding stents, which can provide the desired fit and even adapt to vessel changes over time. Here, we use simulation to examine how such stents expand to the artery diameter.

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Brianne Christopher January 21, 2019

In a fluid-structure interaction (FSI) scenario, the fluid can affect the structure, the structure can affect the fluid flow, or both. When modeling a device that relies on FSI, you may want to simulate one of these options, a combination, or all three. The Fluid-Structure Interaction multiphysics coupling in the COMSOL® software makes it easy to implement FSI in your analyses. In this blog post, we study the flow through a ball check valve for different flow directions and pressures.

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Erik Melin January 16, 2019

The goal of mesh adaptation is to modify the mesh to solve a problem more efficiently. We want to use as few elements as possible to obtain an accurate solution. Typically, we would like a coarser mesh in regions that are not very important and a more refined mesh in regions of interest. We might even consider anisotropic elements. As of version 5.4, the COMSOL Multiphysics® software includes enhanced tools to adapt a mesh. Let’s take a look.

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Bridget Paulus January 14, 2019

How can teachers improve student learning in undergraduate science, technology, engineering, and mathematics (STEM) courses? To find out, Ivana Milanovic, a professor at the University of Hartford, developed a simulation-based approach that combines problem-based learning (PBL) and inquiry-based learning (IBL). Milanovic discussed her strategy and its benefits during her keynote talk at the COMSOL Conference 2018 Boston. Below, you can find a summary and video recording of her presentation.

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Mark Robins January 7, 2019

In a previous blog post, we explored whether U.S. copyright law protects scientific models. That post concluded that models, alone, are frequently incapable of reflecting the type of creative expression required to be eligible for protection but also noted that functionality added to models — as occurs when building applications — may well contain such creative expression. Here, we explore the tools that COMSOL offers to help users of the COMSOL Multiphysics® software to publish and protect their proprietary applications.

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Kristian Ejlebjærg Jensen January 4, 2019

Engineers are given significant freedom in their pursuit for lightweight structural components in airplanes and space applications, so it makes sense to use methods that can exploit this freedom, making topology optimization a popular choice in the early design phase. This method often requires regularization and special interpolation functions to get meaningful designs, which can be a nuisance to both new and experienced users. To simplify the solution of topology optimization problems, the COMSOL® software contains a density topology feature.

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Magnus Ringh December 24, 2018

Reports are valuable for documenting and showcasing results from your simulations. As of version 5.4, the COMSOL Multiphysics® software includes support for report templates, which you can use to create custom reports. In this blog post, we describe how to add report templates and show some examples of how they can be useful for creating reports with specific layouts and contents.

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Bridget Paulus December 19, 2018

When it comes to synchrotron light sources, brighter is better. By using bright beams in their accelerator, researchers at the Advanced Photon Source (APS) synchrotron facility can efficiently gather detailed data. In collaboration with APS engineers, Nicholas Goldring of RadiaSoft LLC creates and distributes simulation applications for designing vacuum chambers relevant to the APS. Below, find a video recording and summary of his keynote talk from the COMSOL Conference 2018 Boston.

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Magnus Ringh December 11, 2018

The COMSOL Desktop® is the integrated user environment for creating and managing simulations in the COMSOL Multiphysics® software. It includes the Model Builder window, model tree, Graphics window, as well as menus and toolbars with a multitude of modeling tools. In this blog post, we will show you how to customize the user interface and use a variety of keyboard shortcuts to get the most out of the modeling process.

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