5.15.17.2. Variables Available for System Coupling

The following variables are available on all data transfer regions.

Table 5.1: Variables On Boundary Wall Regions

Display Name / Internal Name	Transfer Direction	Tensor Type	Extensive/Intensive	Quantity Type
Force / `FORC`	Input	Vector	Extensive	Force
Force Density / `FDNS`¹	Input	Vector	Intensive	Force
Displacement / `INCD`	Output	Vector	Intensive	Length
Heat Flow / `HFLW`	Input and Output	Scalar	Intensive	Heat Rate
Heat Transfer Coefficient / `HCOE`	Input	Scalar	Intensive	Heat Transfer Coefficient
Temperature / `TEMP`	Input and Output	Scalar	Extensive	Temperature
Near Wall Temperature / `TBULK`	Input	Scalar	Intensive	Temperature
1: `FDNS` is not supported for System Coupling in Workbench or for cases where Mechanical uses shell elements and Force Density is applied to both sides of any shell.

Table 5.2: Variables On Body System Coupling Regions

Display Name / Internal Name	Transfer Direction	Tensor Type	Extensive/Intensive	Quantity Type
Heat Rate Density / `HGEN`	Input	Scalar	Intensive	Heat Rate
Temperature / `TEMP`	Output	Scalar	Intensive	Temperature
Temperature / `TPLD`	Input	Scalar	Intensive	Temperature

Note: When using System Coupling in Workbench, the data plotted in System Coupling's chart monitors are provided by the coupling participants. For non-linear analyses, the structural convergence quantities from Mechanical are plotted in terms of the activated degrees of freedom in the structural solver. For linear analyses, the structural convergence quantities from Mechanical are plotted only for thermal analyses with the temperature degrees of freedom.