How to Search for a Specific COMSOL Multiphysics® Application

Andrew Griesmer May 10, 2018

The Application Libraries, accessed directly in the COMSOL Multiphysics® software, contain an ever-growing number of examples filled with valuable information on how to model certain types of problems, use certain features, and employ specific modeling techniques. To get the most out of the Application Libraries, you should be able to easily find the information you need.

Chasing Waves: The Story of John Scott Russell and the KdV Equation

Brianne Costa May 9, 2018

During his life, John Scott Russell chased his passion for science — literally. While watching horses pull a boat through a shallow canal, he noticed a wave behaving strangely and followed it for one or two miles on horseback. For the rest of his life, he continued to chase this wave (which he called the “wave of translation”) figuratively, persevering even when his theories were ridiculed by scientists. Did Scott Russell ever catch up to his wave?

How to Use the Parameter Estimation Study Step for Inverse Modeling

Amelia Halliday March 29, 2018

When creating a simulation, you usually start by building the forward model, supplying various inputs, and then looking at the results. However, what if you have a set of results and want to find the input values that provide the same outcome? Here, we show how to use the Parameter Estimation study step, which helps you build an inverse model and solve for the optimal values of your model inputs.

How to Use Interpolated Material Data to Model Irregular Geometries

Hanna Gothäll March 20, 2018

We have already discussed different ways to create geometry objects of irregular shapes on the blog. In this blog post, we will demonstrate an incredibly powerful alternative approach by using interpolation functions. Instead of creating geometry objects, we will indirectly define the irregular shape by taking advantage of the spatial variation of a material property in the object we want to study.

How to Run on Clusters from the COMSOL Desktop® Environment

Lars Drögemüller March 9, 2018

Many types of analyses benefit from running the COMSOL Multiphysics® software on high-performance computing (HPC) hardware. This is one of the main reasons behind the Cluster Computing node, which helps seamlessly integrate the COMSOL® software with any kind of HPC infrastructure, while maintaining the convenience of a graphical user interface. In this blog post, learn how to run large simulations remotely on HPC hardware directly from the COMSOL Desktop® graphical environment.

Acoustic Topology Optimization with Thermoviscous Losses

GuestRené Christensen February 28, 2018

Today, guest blogger René Christensen of GN Hearing discusses including thermoviscous losses in the topology optimization of microacoustic devices. Topology optimization helps engineers design applications in an optimized manner with respect to certain a priori objectives. Mainly used in structural mechanics, topology optimization is also used for thermal, electromagnetics, and acoustics applications. One physics that was missing from this list until last year is microacoustics. This blog post describes a new method for including thermoviscous losses for microacoustics topology optimization.

Model Deforming Objects with the Arbitrary Lagrangian-Eulerian Method

Edmund Dickinson January 17, 2018

As two of the greatest mathematicians to have ever lived, Leonhard Euler and Joseph-Louis Lagrange made numerous contributions to continuum mechanics. Combining their individual descriptions of the subject inspired the arbitrary Lagrangian-Eulerian (ALE) method, a technique that can be used for a multitude of simulation applications. Find out how the work of Euler and Lagrange helped create the ALE method and how it aids your simulations in the COMSOL Multiphysics® software.

A Simulation Color Table for Engineers with Color Vision Deficiency

Caty Fairclough December 27, 2017

When looking through scientific papers, it’s common to see colorful results. Although aesthetically pleasing to some, these results can be difficult to interpret for engineers with color vision deficiency (CVD). You may think that presenting results in grayscale could help, but humans are less able to discern between different shades of gray. So what’s the best option here?

3 Examples of Equation-Based Modeling in COMSOL Multiphysics®

Caty Fairclough December 20, 2017

Creating new physics interfaces that you can save and share, modifying the underlying equations of a model, and simulating a wider variety of devices and processes: These are just a few ways you can benefit from the equation-based modeling capabilities of the COMSOL Multiphysics® software.

How to Build Geometries from Elevation Data to Model Irregular Shapes

Hanna Gothäll December 19, 2017

In Part 2 of our blog series on how to model irregular shapes in the COMSOL Multiphysics® software, we focus on how to create a surface of an irregular shape based on elevation data stored in various formats such as text, an image, or a DEM file. This approach is best suited for data where the height (or elevation) is a function of x- and y-coordinates.

What Happens If I Use 2 Different Unit Systems in 1 Simulation?

Amit Patil December 6, 2017

Measurements and units make our professional and personal lives orderly and systematic. Different unit systems have been used over time, but today there are two dominant systems: the metric and English unit systems. What happens when both unit systems are used for the same application? In this blog post, we will shed light on two historical disasters brought about by the use of different unit systems and highlight unique features of the COMSOL Multiphysics® software for handling different unit systems.

1 2 3 18