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Create the Rotating Region Material

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    To open the Material quick edit dialog, click Edit from the Materials context menu:

    Change the Type to Rotating Region

    On the Material line, Click Edit...

    Enter the name rotor in the Name field

    Select My Materials from the Save to database menu.

    Verify the Scenario Type is Known Rotational Speed

    Click the Rotational Speed button.

    Variation Method = Table

    Rotational Speed Units = RPM; Time Units = second

    Rotational Speed = 0; Time = 0

    Rotational Speed = 600; Time = 0.75

    Rotational Speed = 600; Time = 100

    Click Apply.

    Click Save.

    Click OK.

    NoteThe values in the table are designed to ramp up the rotational speed of the impeller gradually to avoid an impulsive start. This technique often reduces analysis instability, and improves overall accuracy of the solution.

    For more about Rotating Region Materials

    For more about non-impulsive startup

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