Part Libraries
Introduction
The Part Libraries contain collections of geometry parts, which serve as extended geometric primitives or parameterized geometry sequences specially created for an application area. These parts are stored as part models, which are COMSOL MPH files that contain only the following:
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One or several geometry parts. The first part is the main part, and it is the only one that the user of the part model will see. Other parts can exist for the sole purpose to be called from the main sequence.
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Optionally, a number of global functions that are used by the part.
A part model does not contain materials, mesh, or physics.
Some specialized part libraries ship with the COMSOL products, but you can also add your own part libraries. In COMSOL Multiphysics, you have access to a library with parts for creating any of the five Platonic solids (cube, tetrahedron, octahedron, dodecahedron, or icosahedron), various pipe configurations, a propeller with constant pitch, a random flat surface, and 2D and 3D geometries for common repetitive microstructures, intended for homogenization using the representative volume element (RVE) technique (also called representative element volume or the unit cell). Input parameters make it possible to create instances of these parts with varying dimensions and layout.