A Frequency Domain, AWE Reduced-Order Model node () defines a reduced-order model using asymptotic waveform expansion (AWE) to represent a frequency response. See AWE Solver.

The Settings window for a Frequency Domain, Modal, Reduced-Order Model node contains the following sections:

Here you specify the Frequency value to be used when evaluating outputs. It is by default set to freq, which means that the reduced-order model will be evaluated at the same frequency as the calling model in which it is used.

This section provides an overview of output quantities which the reduced-order model makes available for evaluation, both during solution and in postprocessing. These outputs are defined in the corresponding Model Reduction node’s Outputs section. The Variable column shows the variable names defined by the reduced-order model.

When Use output dependent variables is selected, the reduced-order model also declares the dependent variable names entered in the Dependent variable column. When the reduced-order model is part of another model, these dependent variables can be assigned the value of the corresponding output variable each time a solution is stored. This behavior is controlled by the Store output dependent variables setting in the Physics and Variables Selection section of each study step where the reduced-order model is used. These settings are only available for reduced-order models that have outputs.

This section displays a list of dependent variable fields which this reduced-order model can reconstruct. When the reduced-order model is used in a calling model, it defines an operator <rom_name>.eval(<expr>), where <rom_name> is the Name of the reduced-order model and <expr> is an arbitrary expression.