## 3.10. Import CCL Command

CFX Command Language (CCL) consists of commands used to carry out actions in CFX-Pre, the CFX-Solver Manager and CFD-Post. All of the steps carried out in CFX-Pre are executed as CCL commands in the software’s engine, and these commands can be exported and imported to other cases.

Tip:

- You can also import expressions and regions using the Import CCL command.

- To import composite region definitions from older versions of CCL, use the Import CCL command found in the File menu, rather than the import command found in the Regions workspace.

A useful application of importing CCL is to apply the same preprocessing data to a number of different meshes. In such a case, the following general workflow may be ensued:

1. Import the new mesh.

2. Import the CCL data.

3. Assign mesh locations to the domains and boundary conditions, if required.

4. Write the CFX-Solver input file for the CFX-Solver.

The benefit of using this workflow is that there would be no need to specify all of the preprocessing data again.

Importing a set of commonly used customized material or reaction definitions is also possible by importing a CCL file. A useful application of the import CCL feature is demonstrated when using Library Mode. For details, see Library Objects.

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