Discuss the importance of dimensional analysis Explain clearly Buckingham’s theorem method and Rayleigh’s methods of dimensional analysis.
A circular cylinder of a given Length/Diameter ratio is kept in steady rotation at N revol./sec, in a uniform stream of fluid of velocity. Assuming that the power required to maintain the motion depends on density, kinematic viscosity of the fluid, and the diameter D of the cylinder. Using Rayleigh’s method show that
