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Improving Your Meshing with Swept Meshes
Modeling geometries with high aspect ratios can be one of the more challenging tasks for the finite element analyst. You want to have a mesh that will accurately represent the geometry and the...
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Model Translational Motion with the Deformed Mesh Interfaces
COMSOL Multiphysics includes two interfaces for manually defining the deformation of finite element mesh, the Deformed Geometry interface and the Moving Mesh interface. In this blog post, we will...
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Deformed Mesh Interfaces: Rotations and Linear Translations
When using the finite element method, we often want to model solid objects that are rotating and translating within other domains. The deformed mesh interfaces in COMSOL Multiphysics can be used to...
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How to Improve Your Paddle Stroke with Simulation
Good competitive paddling requires strength, timing, consistency, and teamwork. Initially, this may seem quite easy. Simply stick your paddle in the water and make the water go backward so that the...
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Exploiting Periodicity in Models with High Péclet Numbers
When solving a chemical species transport problem, we are often dealing with cases that have a high Péclet number, where the ratio of the advection to diffusion is very high. We may also be dealing...
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Changing the Dimensions of a Model Using Shape Optimization
In this blog post, we will introduce the concept of shape optimization for adjusting part dimensions by using analytic sensitivity methods. If you have a single objective function that you want to...
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Designing New Structures with Shape Optimization
While designing a structure, have you ever been unsure of how to achieve the best shape? If so, then you will want to add a useful technique called shape optimization to your COMSOL Multiphysics...
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Using the Application Builder to Create a Koch Snowflake
It has been a remarkably warm winter in Boston, but we finally got our first snowfall. As I was staring out the window earlier, I started thinking about snowflakes and how their formation cannot be...
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Study Radiofrequency Tissue Ablation Using Simulation
Radiofrequency tissue ablation is a medical procedure that uses targeted heat for a variety of medical purposes, including killing cancerous cells, shrinking collagen, and alleviating pain. The process...
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Keeping Track of Element Order in Multiphysics Models
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...
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Control Current and Voltage Sources with the AC/DC Module
If you’ve ever worked with the Terminal boundary condition in COMSOL Multiphysics, you know that this electrical boundary condition can apply a current or voltage, among other options. But did you know...
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Automate Model Preprocessing with the Application Builder
Have you ever wanted to rapidly set up a COMSOL Multiphysics model with hundreds of different parts? If so, you might not want to use a graphical user interface where you manually enter dimensions and...
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Modeling Coils in the AC/DC Module
One of the most common uses of the AC/DC Module is for modeling electromagnetic coils and the interactions with their surroundings. Today, we will look into one of the key concepts to keep in mind when...
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Using Radial Basis Functions for Surface Interpolation
Have you ever had a set of nonuniformly distributed points in a Cartesian plane that sample a surface height, such as points on the contours of a map or data points representing some material property...
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Modeling the Thermal Curing Process
Thermal curing is the process of temperature-induced chemical change in a material, such as the polymerization of a thermoset resin. This process is relevant, for example, when a precursor resin is...
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How to Choose Between Boundary Conditions for Coil Modeling
Whenever you are modeling coils with the AC/DC Module in COMSOL Multiphysics, you need to consider what type of boundary conditions to use to truncate your modeling domain. In this blog post, we will...
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Thermal Modeling of Phase-Change Materials with Hysteresis
In today’s blog post, we will introduce a procedure for thermally modeling a material with hysteresis, which means that the melting temperature is different from the solidification temperature. Such...
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Modeling Thermal Ablation for Material Removal
Whenever solid materials are heated enough, they will melt and then vaporize to a gas. Certain materials will even go directly from the solid to the gas phase, a process referred to as sublimation or...
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Exporting Meshes and Solutions Using the Application Builder
Have you ever wanted to write out mesh and analysis data from COMSOL Multiphysics into a text file? You may want to do this when passing information to another software program or even just into a...
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Thermal Modeling of the Air Flow Inside and Around Your House
Have you ever wanted to quickly predict the temperature of an enclosed structure, such as your house, that is exposed to ambient environmental conditions? The temperature inside depends on the...
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