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COMSOL Multiphysics® 6.4 Release Highlights

Version 6.4 herunterladen
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Mesh Updates

COMSOL Multiphysics® version 6.4 introduces the ability to build swept meshes using the hex-dominant method, a new feature for verification studies of optimization results and for editing imported meshes, and the display of more build information and statistics for each mesh operation. Learn more about these updates below.

New Functionality for Generating Structured Meshes

High element quality is now guaranteed in even more complex cases with the new hex-dominant method, the new default for swept meshing. When building a quad-dominant mesh on source faces, triangles are inserted to aid element size transition, resulting in prism elements in the swept mesh.

A grey 3D model with the prism shaped elements colored in blue.
A hex-dominant mesh where the prisms have been colored blue.

The Swept operation can now automatically generate a mesh in domains containing a step or ledge thanks to added support for disconnected source faces. In previous versions, these types of domains required manual partitioning.

Two cylinder models, where the model on the left is showing three disconnected faces in magenta.
A domain with three disconnected source faces (magenta), where a mesh is swept onto the destination face (yellow).

Mesh-Based Geometries

The setup of verification studies after topology optimization, as well as the editing and repair of imported meshes, is now more efficient with the new Mesh-Based Geometry node. This node can either be created directly from results datasets, or it can be added manually for imported meshes. For mesh-based geometries and imported meshes, several new selection operations have been added: Ball Selection, Box Selection, Cylinder Selection, Union Selection, Intersection Selection, Difference Selection, and Complement Selection. The following tutorial models demonstrate this new functionality:

The COMSOL Multiphysics UI showing the Model Builder with the Complement Selection node highlighted, the corresponding Settings window, a pore scale model in the Graphics window, and the Selection List window.
The mesh-based geometry of a microscopic porous structure with selections.

Mesh Information

The Settings window for all built mesh operations now includes statistics and information about the mesh elements. For example, when building a physics-controlled mesh, this section displays the number of elements, the minimum quality, and the average quality for each generated element type.

The COMSOL Multiphysics UI showing the Model Builder with the Mesh node highlighted, the corresponding Settings window, a car model in the Graphics window, and the Selection List window.
The Information section of the settings for all mesh operations now includes information about the generated, imported, or modified elements.

Updated Tutorial Models

COMSOL Multiphysics® version 6.4 offers two updated meshing tutorial models.

STL Import Tutorial Series

Three vertebrae models showing the mesh.
The model has been updated to include three vertebrae and discs. CAD objects and the imported mesh are combined in a Mesh-Based Geometry sequence.
Application Library Titles:
stl_vertebra_mesh_import
stl_2_combine_geom_mesh
Download from the Application Gallery

Analyzing Porous Structures on the Microscopic Scale

A porous structure model with streamlines flowing throughout it.
The model has been updated to use a Mesh-Based Geometry sequence and defined mesh selections.
Application Library Title:
stl_2_combine_geom_mesh
Download from the Application Gallery