The Basic Settings tab is used to define the fundamental properties of an Additional Variable. It is accessible by creating a new Additional Variable or by editing an Additional Variable listed in the tree view.
SpecificThe Additional Variable is solved on a per-unit-mass basis. For details, see Volumetric and Specific Additional Variable in the CFX-Solver Modeling Guide.
VolumetricThe Additional Variable is solved on a per-unit-volume basis. For details, see Volumetric and Specific Additional Variable in the CFX-Solver Modeling Guide.
UnspecifiedThe Additional Variable is defined in terms of an algebraic expression using CEL. For details, see Unspecified Additional Variables in the CFX-Solver Modeling Guide.
Dynamic VariableThe Additional Variable is defined as a dimensionless value that steps automatically toward unity as the solution progresses. Note that there are no other settings for Dynamic Variables on the Basic Settings tab because such variables are always dimensionless scalars. Dynamic Variables are used to moderate changes to expression-based settings to improve convergence robustness for steady-state cases and harmonic balance cases. For details, see Dynamic Additional Variables in the CFX-Solver Modeling Guide.
Specify the units that describe the Additional Variable. For details, see Additional Variables in the CFX-Solver Modeling Guide.
The Additional Variable's Tensor Type can
be set to Scalar or Vector. If an Additional Variable is defined as type Vector, the components of a vector algebraic equation can be defined at
the domain level.
Vector Additional Variables cannot be directly referenced in CEL expressions. The syntax for referencing a component of a vector Additional Variable is as follows:
<Component Name>.<Additional Variable Name>_x