Question

What characteristic length should I use to calculate the magnetic Reynolds number?

Answer 1

I am trying to find the braking torque in an eddy current braking system for the setup shown below. I want to consider skin effect for high speed applications. My approach so far has been as follows:
The total power absorbed by the rotor ( ) can be found by integrating over the volume of the rotor,

Answer 2

CALCULATION OF REYNOLDS NUMBER IS VERY EASY. IT IS USEFUL IN THE USE OF MANY SUMS IN PHYSICS .........
SO USE THE FORMULA GIVEN BELOW


❂P=∫ρJ2dVP=∫ρJ2dV