Particle Tracing in a Component of a Quadrupole Mass Spectrometer

Caty Fairclough | July 25, 2016

Quadrupole mass filters, the key component of quadrupole mass spectrometers, filter ions by their charge-to-mass ratio, only allowing ions with a certain ratio to pass through the device. As such, a high transmission probability for a specific ion through the filter is desirable. However, fringe fields in the mass filter can affect this probability. By using multiphysics simulation, we can take a closer look at quadrupole mass filters and investigate the effect of fringe fields on these devices.

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Bridget Cunningham | July 21, 2016

In any form of treatment, it is always desirable to minimize the level of discomfort that the treatment process causes patients, while ensuring overall safety and effectiveness. For diabetes patients, insulin injections remain an important form of treatment, but the process itself can be painful. With the help of multiphysics simulation, a team of researchers from the University of Ontario Institute of Technology sought to develop a MEMS-based micropump that could administer insulin injections in a safe and painless way.

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Bridget Cunningham | July 20, 2016

Cryogenic techniques are used to treat a wide range of cosmetic dermatological problems as well as remove internal tumors and other damaged tissue. Shifting from the typical nitrogen-based approach, researchers at the University of Birmingham in the U.K. sought to investigate the potential of using a thermoelectric cooler, or Peltier device, to cool a cryogenic probe. Here’s a look at how COMSOL Multiphysics provided them with the tools to do so.

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Caty Fairclough | July 19, 2016

While bumblebees are not a complete mystery, we still have a lot more to learn about these helpful insects. A topic with a lot of buzz surrounding it is how they find food. Using electroreception, an ability most often found in aquatic animals, is one possibility. But how do bumblebees use electroreception? To find answers, a research team at the University of Bristol combined the power of physical experiments and simulation.

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Nirmal Paudel | July 18, 2016

In this blog post, we work through the three-phase induction motor described in Testing Electromagnetic Analysis Methods (TEAM) workshop problem 30a. We analyze the induction motor in 2D using the transient solver in the Rotating Machinery, Magnetic interface. We investigate the motor’s start-up dynamics by coupling the electromagnetic analysis with the rotor dynamics, including the inertial effects. At the end, we compare the benchmark model’s results with those from the COMSOL Multiphysics simulation.

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Andrea Ferrario | July 13, 2016

The Application Builder is a powerful tool for transforming models into customized, easy-to-use apps. An app’s intuitive user interface (UI) not only gives you control over simulation inputs and geometric parameters, but it also enables you to program the app to perform complex operations. Today, we’ll demonstrate how to create an app that allows you to dynamically create or modify geometry parts and apply appropriate physical specifications and mesh, all thanks to the power and flexibility of the Method Editor.

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Caty Fairclough | July 12, 2016

You’ve generated your simulation results and you want to communicate your findings with other people. To do so clearly and effectively, you will need to create easy-to-understand, eye-catching visualizations. Therefore, as of COMSOL Multiphysics® software version 5.2a, you now have six new color tables to further enhance your postprocessing. Let’s learn about the inspiration behind these color tables and take a look at a few specific use cases.

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Brianne Costa | July 11, 2016

For gas pipeline maintenance standards, the adage “rules are meant to be broken” may not apply, but “rules are meant to be updated” certainly does. Specifically, the generous distance requirements between pipeline squeeze-off locations and pipe fittings cause potentially unnecessary digging. This prompted Operations Technology Development (OTD), a partnership of natural gas distribution companies, to initiate a project with Gas Technology Institute (GTI), where researchers used simulation to investigate the standard distance requirements for streamlined and safe pipeline maintenance.

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Pawan Soami | July 7, 2016

Gears are devices that are widely used for the transmission of rotary motion from one shaft to another. Automobiles, electric motors, wind turbines, and other machines all require a gearbox in order to change their speed or torque. With the latest version of COMSOL Multiphysics® — version 5.2a — we bring you new gear modeling features and functionality, from components in the Parts Library to an array of tutorial models that illustrate potential applications.

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Abbie Weingaertner | July 6, 2016

Consider a class of civil engineering structures like the Pratt truss bridge. While the concept behind each design is similar, the actual configuration of the bridge and the loads that are applied to it varies by each case. With the Application Builder, you can design a simulation tool that enables users to easily modify parameters to account for these differences in geometry and loads. Learn more with our Truss Bridge Designer computational app.

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Jessica Roy Mitchell | July 5, 2016

Requests from users like you fueled many of the available upgrades in the COMSOL Multiphysics® software and the COMSOL Server™ product version 5.2a. The ability to customize the appearance of the COMSOL Server web interface was just one of these requests. See how your feedback prompted the development of tools that allow you to easily change the look and feel of the interface to fit your organization’s branding.

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