COMSOL Multiphysics^® 6.2 Release Highlights

Geometry Updates

COMSOL Multiphysics^® version 6.2 introduces the ability to create parameters from certain geometric measurements and brings improvements to the Sweep operation. Read more about these updates below.

Parameterizing Models Using the New Measurement Parameters

It is now possible to create parameters for the distance between entities or for the average coordinates of a selection of vertices using the new Distance Measurement and Centroid Measurement features, respectively. The parameters can be used in downstream geometry construction and elsewhere in the Model Builder, which makes it easier to parameterize physics settings based on the geometry. This can simplify the workflow when building simulation apps. You can use these new features in the following models:

• ladder_frame
• bracket_static
• bracket_fatigue_random_vibration

Using the Centroid Measurement feature to calculate the coordinates of the center of a bracket hole. The parameters are used in the model to create a simplified representation of the suspension system.

Better Control of Twisting Along a Sweep

The Sweep operation has been improved with better control of the cross section's twisting by specifying a direction vector to follow. This makes it easy to create a tunnel where the floor has a slope only in the sweep direction, for example. It is also possible to sweep points and edges and to align the cross section to an existing object at the end of the spine curve.

The geometry of a highway tunnel where the cross section is oriented along the vertical direction using the new Follow projection of vector to normal plane twisting option.

Logical Expression Selection and Quick Access to the Selection List

A Logical Expression Selection feature can be added to the geometry sequence to use a logical expression that quickly combines selections. For example, the expression (sel1||sel2)&&!sel3 means the union of the sel1 and sel2 selections and the subtraction of the sel3 selection. There is now a Selection List button on the Geometry, Mesh, and Definitions ribbon tabs that opens the Selection List window, where all named selections in the model can be viewed and there is an option to create new selections.

In this model of a light bulb, a selection for the internal radiation boundaries is created using a logical expression to subtract the selection of Composite Curve 1 (cc1) from the union of the Tungsten (c1) and Glass Boundaries (adjsel1) selections.