App: Studying a Concentric Tube Heat Exchanger’s Dimensions

Bridget Cunningham | June 10, 2015

By design, heat exchangers transfer heat from one source to another. When analyzing the efficiency of this heat transfer, it is important to consider the impact of the system’s dimensions. Simulation offers a simplified approach to testing the performance of various designs. With simulation apps, you can now bring this power into the hands of those who are not simulation experts. Let’s get started by exploring the Concentric Tube Heat Exchanger Dimensioning Tool demo app.

Nicolas Lorphelin | June 9, 2015

Previously on the blog, we introduced you to hygroscopic swelling, describing its impact on specific types of materials. With the Hygroscopic Swelling feature, you can model this important effect in COMSOL Multiphysics. Follow along as we guide you through the modeling process, highlighting a new multiphysics coupling feature available in version 5.1.

Caty Fairclough | June 4, 2015

Heat sinks are components designed to cool off devices by dissipating heat. They can be used passively or in active cooling systems combined with fans for example. When optimizing heat sink designs, you can turn to simulation for guidance. But what if you could simplify the design process by embedding your model in an app? You can — and the Heat Sink with Fins demo app is here to get you started.

Walter Frei | June 2, 2015

The COMSOL Conference is a great way for those in the simulation community to learn about COMSOL Multiphysics® software and its family of products. This year’s multiphysics simulation event will feature a variety of new learning opportunities for conference attendees. See what’s on the schedule for the COMSOL Conference 2015 at its first two stops — Boston and Grenoble.


Caty Fairclough | May 28, 2015

Simulating fatigue offers valuable insight into how stress can affect the longevity of a structure and its components. This can help identify potential design problems and pave the way for the development of a safer structure. Arriving at this solution, however, often requires running several simulations to test different scenarios. Our Frame Fatigue Life demo app demonstrates how simulation apps can save you time and energy in evaluating the impact of fatigue.

Caty Fairclough | May 26, 2015

Cars have to exist in a variety of environmental conditions. They need to handle environmental changes such as temperature fluctuations. Therefore, it is important to create parts that can handle these conditions. An investigation into the functionality of an inductive position sensor was presented during the COMSOL Conference 2014 in Cambridge.


Lexi Carver | June 8, 2015

In recent posts, we have covered a variety of plot types used for postprocessing simulation results in COMSOL Multiphysics and the ways that they can help you understand and share your results. Now let’s take a look at some tricks to simplify work in the graphics window.

Henrik Sönnerlind | June 3, 2015

Your finite element model will sometimes contain singularities — that is, points where some aspect of the solution tends toward an infinite value. In this blog post, we will explore the common causes of singularities, when and how to remove them, and how to interpret results when singularities are present in your model. While most of this discussion is in terms of structural mechanics, similar phenomena can also be found in many other physics fields.

Caty Fairclough | June 1, 2015

Happy birthday to the Paris-born “father of thermodynamics”, Nicolas Léonard Sadi Carnot. A talented physicist and engineer, Carnot channeled his interest in steam engines into the creation of a theoretical thermodynamic cycle called the Carnot cycle. Through this theory, Carnot laid the groundwork for the second law of thermodynamics, which relates to entropy and heat loss and is still relevant in physics and engineering today.


Walter Frei | May 27, 2015

Whenever we are solving a wave electromagnetics problem in COMSOL Multiphysics, we build a model that is composed of domains and boundary conditions. Within the domains, we use various material models to represent a wide range of substances. However, from a mathematical point of view, all of these different materials end up being handled identically within the governing equation. Let’s take a look at these various material models and discuss when to use them.

Brianne Costa | May 25, 2015

Chemical vapor deposition (CVD) is popular in the semiconductor industry for its ability to produce high-quality, pure, and extremely strong materials. Ultra-high vacuum CVD (UHV/CVD) requires complex equipment and very high temperatures. To increase efficiency and control costs, engineers can simulate this complex process. Here, we use the growth of silicon wafers as an example.


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