COMSOL Multiphysics^® 6.3 Release Highlights

COMSOL Multiphysics^® version 6.3 introduces a new mesh element sizing algorithm for easier resolution of geometric details, along with swept meshing improvements and physics-controlled meshing for imported meshes. Learn more about these updates below.

New Mesh Element Sizing Algorithm for Easier Resolution of Geometric Details

For physics-controlled meshing, a new geometry analysis method automatically improves the resolution of small details and curved faces while allowing the mesh size to increase into adjacent regions. This method, enabled by default through the Geometric Analysis, Detail Size setting, allows coarser predefined mesh sizes to be used. The following tutorial models demonstrate this new feature:

• differential_gear
• pasta_extrusion
• power_transistor
• car_door

The geometry of a car door meshed automatically with the new default-enabled Geometric Analysis, Detail Size setting. In previous versions, creating a similar mesh could be accomplished by manually editing the meshing sequence.

Swept Meshing Improvements

The swept mesher is now more robust, automatically selecting the optimal method for meshing source faces. It prioritizes generating an unstructured quad mesh but defaults to a triangle mesh if needed. As a result, the final mesh may consist of a mix of hexahedrons and prisms. Additionally, swept meshing has been automated for shell-like domains, which previously required manual partitioning.

A swept mesh in the chip, solder, and layer domains of an insulated-gate bipolar transistor (IGBT) submodule assembly. Other parts have been meshed with a tetrahedral mesh.

Physics-Controlled Meshing for Imported Meshes

Physics-controlled meshing now supports additional mesh types, including imported STL files. You can easily add a new meshing sequence to operate on the imported STL mesh and then build it. This functionality is demonstrated in the Spray Particle Deposition in Human Airways and STL Import Tutorial Series tutorial models.

Updated Tutorial Models

COMSOL Multiphysics^® version 6.3 offers several updated meshing tutorial models.

STL Import 1 — Repairing and Combining STL Files

This tutorial has been updated to include physics-controlled meshing and the new boundary selection for Create Edges.

Application Library Title:
stl_vertebra_mesh_import
Download from the Application Gallery

STL Import 2 — Combining Geometry with an Imported Mesh

This tutorial has been updated to include physics-controlled meshing.

Application Library Title:
stl_vertebra_import
Download from the Application Gallery

Adjusting the Element Size for the Unstructured Mesh Generator

This tutorial has been updated to include the new boundary mesh size contributor, Geometry Analysis, Detail Size.

Application Library Title:
piston_mesh
Download from the Application Gallery

Geometry Cleanup on a Wheel Rim Geometry

This tutorial has been updated to include the new Geometry Cleanup functionality to prepare the geometry for meshing.

Application Library Title:
wheel_rim
Download from the Application Gallery