we can define any function in:

Solution>Define Loads>Apply>Functions>Define/Edit

and then after saving the function we define the output of the function e.g Pressure, Force etc. but i cannot find any such option for defining angular velocity:

Solution>Define Loads>Structural>Inertia>Angular Velocity,     where i should import the defined transient ang.vel function, or any tabular data import in the angular velocity. Please help.