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Geometry Blog Posts

How to Create a Randomized Geometry Using Model Methods

June 5, 2017

What does cheese have to do with setting up a COMSOL Multiphysics® model? Here, we use the random holes in a piece of Swiss cheese to demonstrate creating randomized geometries with methods.

How to Generate Random Surfaces in COMSOL Multiphysics®

June 2, 2017

Get a comprehensive background and step-by-step guide to generating random surfaces in COMSOL Multiphysics®, such as rough surfaces and microstructures.

How to Use Topology Optimization Results as Model Geometries

February 1, 2017

Oftentimes, topology optimization is not the last step in your design process. In fact, you can use the results from a topology optimization study as model geometries for your next analysis.

Efficiently Assign Materials in Your COMSOL Multiphysics® Model

September 20, 2016

To optimize your modeling processes, there are a number of built-in materials available for you to use in the COMSOL Multiphysics® software. Along with these materials are features and functionality that allow you to efficiently assign materials to geometric entities in your model. These tools help expedite the process of assigning materials, specifying material properties, and even comparing the impact of different materials on your simulation results. Here, we’ll highlight three tutorial videos that showcase how to use such tools.

Improved Functionality and Tips for Importing STL and NASTRAN® Files

September 14, 2016

STL files originating from 3D scan sources and meshes in the NASTRAN® file format are often used as bases for geometries. However, performing simulations on these realistic objects can be challenging, particularly when preparing the geometry. The COMSOL Multiphysics® software contains features for dealing with these files. Learn how to utilize this functionality as well as how to achieve good results when importing STL and NASTRAN® files.

How to Reuse a Deformed Shape as a Geometry Input

September 1, 2016

Suppose you take a piece of metal — a thin sheet, for example — and apply some mechanical loads. The metal will deform and take on a new shape that differs from the original undeformed configuration. Say you now want to use this deformed object as part of a new geometry construction. You can then solve another physics problem on the new composite domain. Today, we’ll demonstrate how to use a deformed object as an input to a geometry sequence.

Streamline Your Simulation Workflow with Named Selections

August 3, 2016

When you are creating a model, it can sometimes be difficult to keep track of all the parts in the geometry, including the conditions or constraints that apply to each section. This is especially true when dealing with large, complex geometries and multiple physics interfaces. In COMSOL Multiphysics, tools like named selections help maintain your model setup and streamline your workflow. Here’s a look at three tutorial videos demonstrating how to create and utilize Explicit, coordinate-based, Boolean, and adjacent selections.

How to Build a Parameterized Archimedean Spiral Geometry

July 27, 2016

Archimedean spirals are often used in the analysis of inductor coils, spiral heat exchangers, and microfluidic devices. Today, we will demonstrate how to build an Archimedean spiral using analytic equations and their derivatives to define a set of spiral curves. Based on these curves, we will then create a 2D geometry with specific thickness, extruding it to a full 3D geometry.