The following list of limitations should be viewed in conjunction with the list of limitations provided in the Ansys DesignXplorer documentation (ROM Limitations and Known Issues in the DesignXplorer User's Guide):
You must have at least one input and one output parameter defined before you can enable the reduced order model in Fluent.
Interface zones are not available for use with ROMs.
The 3D ROM does not support geometry parameter updates.
ROMs can only be created for steady-state cases.
Combustion and radiation models are not supported for ROMs.
Parametric optimization using the ROM through Fluent is not supported.
Moving and deforming meshes are not supported for ROMs.
You must select the variables that correspond with the input and output parameters that you have defined.
Report Definitions: Expression and User-Defined report definitions are not available for use with ROM variables. You can, however, create a named expression that includes a report definition for a ROM variable.
Report Definitions: It is recommended that you do not use Mass-Weighted Average, Vertex Average, Vertex Minimum, or Vertex Maximum report definitions, as the ROM only has data available on cell face centers and cell centers. Instead, use Area-Weighted Average, Facet Average, Facet Minimum, or Facet Maximum report definitions.
Output Parameters are not supported for the following report definition types:
User Defined
Expression
Flux Report
Surface Report—Flow Rate