zCFD requires a license. If you do not already have a license, please contact to obtain one. The license file provided can be placed in the same directory alongside the input files or else its location can be defined using the environment variables below

export RLM_LICENSE=port@server


export RLM_LICENSE=/path/to/license/file

In the case that the system running the simulation cannot access the internet a local license server will be required. See for details.