Multiphysics Simulation Provides Accurate Muffler Designs

Linus Fagerberg | February 24, 2016

Today, guest blogger Linus Fagerberg of Lightness by Design, a COMSOL Certified Consultant, shares how multiphysics simulation provides accuracy in automotive muffler design. The acoustic design of mufflers in the automotive industry has traditionally been performed by an iterative process where different alternatives are compared by experimental methods until a satisfactory design is found. Numerical simulation can drastically reduce a project’s time and expenses, while simultaneously increasing the performance of the muffler.

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Scott Smith | February 23, 2016

Touchscreen technology is becoming more and more common in consumer electronics. When designing these interfaces, achieving accuracy, as well as a fast time-to-market, is key. Using our Touchscreen Simulator demo app, we show you how simulation apps can aid in the design of capacitive touchscreen devices.

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Nirmal Paudel | February 18, 2016

In a previous blog entry, we showed you how to model rotating machines, like motors and generators, using the Rotating Machinery, Magnetic interface in COMSOL Multiphysics. Today, we will demonstrate the steps we outlined with a 3D generator model example, comparing our results with an analogous 2D model. The concepts of sector symmetry and periodic boundary conditions, including examples illustrating their use, are also highlighted.

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Caty Fairclough | February 16, 2016

By design, façades are meant to be visually appealing. Aesthetics, however, aren’t the only concern. It is also important to consider elements such as stability, efficiency, and comfort. Engineers at Newtecnic use COMSOL Multiphysics to strike this balance, creating façades that are both eye‐catching and functional.

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Caty Fairclough | February 11, 2016

Before building a house, architects and engineers look to optimize the sound quality of their design. Simulation tools like COMSOL Multiphysics are a valuable resource for doing so, generating accurate results while saving on costs. With apps, this workflow is becoming even more efficient. Those with little knowledge of simulation now have the ability to run their own acoustics analyses and obtain results more quickly. Take a look at our One-Family House Acoustics Analyzer for both insight and inspiration.

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Andrew Strikwerda | February 9, 2016

Electrical cables are classified by parameters such as impedance and power attenuation. In this blog post, we consider a case for which analytic solutions exist: a coaxial cable. We will show you how to compute the cable parameters from a COMSOL Multiphysics simulation of the electromagnetic fields. Once we understand how this is done for a coaxial cable, we can then compute these parameters for an arbitrary type of transmission line or cable.

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Walter Frei | February 22, 2016

Whenever you are building a finite element model in COMSOL Multiphysics, you should be aware of the element order that is being used. This is particularly important for multiphysics models as there are some distinct benefits to using different element orders for different physics. Today, we will review the key concepts behind element order and discuss how it applies to some common multiphysics models.

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Bertil Nistad | February 17, 2016

In version 5.2 of COMSOL Multiphysics, we offer a new feature for simulating corrosion in slender structures. This significantly speeds up the total time spent when working with structures such as oil platforms. By using the boundary element method (BEM) and specialized beam elements in the Current Distribution on Edges, BEM interface, there is no longer a need for a finite element mesh to resolve the whole 3D structure, saving time for large corrosion problems consisting of slender components.

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Yosuke Mizuyama | February 15, 2016

Piezoelectricity finds use in a variety of engineering applications. They include transducers, inkjet printheads, adaptive optics, switching devices, cellphone components, and guitar pickups, to name a few. Today’s blog post will benefit both beginners and experts in piezoelectricity, as we highlight some of the fundamental elements of piezoelectric theory and basic simulations, along with a novel design for improving the range of motion for piezoelectric actuators.

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Nagi Elabbasi | February 10, 2016

Today, guest blogger and Certified Consultant Nagi Elabbasi of Veryst Engineering shares simulation research designed to optimize band gaps for phononic crystals. Phononic crystals are rather unique materials that can be engineered with a particular band gap. As the demand for these materials continues to grow, so does the interest in simulating them, specifically to optimize their band gaps. COMSOL Multiphysics, as we’ll show you here, can be used to perform such studies.

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Mehrzad Tabatabaian | February 8, 2016

Today, guest blogger Mehrzad Tabatabaian discusses turning COMSOL Multiphysics models into apps, a point of focus in his book COMSOL5 for Engineers. Accurately predicting the behavior of objects and systems is a key element in any design workflow. Computational tools like COMSOL Multiphysics help to ensure this, enabling simulation experts to easily test different designs. Now, with the Application Builder, these experts can turn their models into easy-to-use apps that can be accessed by a larger technical community.

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