) you add features that apply to the entire model. Add the following features by right-clicking Global Definitions and choosing an option from the context menu. You can also access the most widely used functionality using the toolbars (the Home toolbar for Windows users and the Main toolbar for macOS and Linux users).|
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Parameters (
 ): User-defined global, scalar values that are used to parameterize any part of the model. |
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Variables (
 ): User-defined variables that can be used anywhere to simplify the specifications of some properties. |
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Variable Utilities (
 ). Matrices and matrix operations such as matrix inverse and diagonalization; also expression operators and global state variables. |
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Thermodynamics (
 ). This branch contains functionality for thermodynamic calculations. See the documentation for the Chemical Reaction Engineering Module for more information. |
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Functions (
 ): Function templates for creating user-defined functions based on analytic expressions or imported data, or specifying parameters for common function types such as step functions, ramps, and random functions. |
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Groups (
 ): Add Load Group ( ) and Constraint Group ( ) nodes for use in load cases. See Using Load Cases. |
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Geometry Parts (
 ). Geometry parts for use in 1D, 2D, and 3D model components. |
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Mesh Parts (
 ). Mesh parts for use in 1D, 2D, and 3D model components. |
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Global Materials (
 ). For adding materials, layered materials, and material switches at the global level. |
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Reduced-Order Modeling (
 ). For adding Global Reduced Model Inputs nodes defining potential inputs to Reduced Model nodes, for choosing Reduced Models Import ( ) to import a COMSOL Reduced Model file (*.mphrom), and for adding Random Vibration nodes. |
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Default Model Inputs (
 ). For modifying the values of default model input properties. |