In this tutorial a side channel blower type pump is simulated. Once more new features are introduced. In the folder for the rotating geometry the user will find three stl files and two text files. The two text files are used to define the rotational settings of the shaft and the rotor. The third *.stl has an _mrf subfix added to the name of the rotor. This makes sure that the mrf zone will inherent the rotational settings from said rotor.