A stirrer is used to mix chemicals in a large tank. The shaft power W supplied to the stirrer blades is a function of stirrer diameter D, liquid density ρ, liquid viscosity μ, and the angular velocity ω of the spinning blades. Use the method of repeating variables to generate a dimensionless relationship between these parameters. Modify your ∏ groups as necessary.

(Table 7-5: Some common established nondimensional parameters or ∏'s encountered in fluid mechanics and heat transfer, in the textbook may be consulted for this question)