Thankyou DrD for replying,
well let me describe you the procedure : i)The process department defines the tip velocity & OD of the rotor required to process a substance.
ii)So, Well get the required RPM of the rotor (v=rω) ,and we need the rotor to run steadily at this rpm
iii)Rotor Design is Confirmed, and say I find a rough MMOI
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Now, How do I find the Power Required to run the rotor steadily at say 1400 RPM??
And I do know that a high initial torque is required to get the rotor from 0 to 1400 RPM, How to find this initial Torque??
I did try using T=I(moment of inertia) x α(angular acceleration)
I know the MMOI , and α = dω / t where dω will be 2*pi*(1400-0)/60
Now here's the problem HOW ON EARTH WILL I BE ABLE TO GET THE TIME 't' ??!