The drag, on a washer-shaped plate placed normal to a stream of fluid can be expressed...

The drag, on a washer-shaped plate placed normal to a stream of fluid can be expressed as

Where d₁ is the outer diameter, d₂ the inner diameter, V the fluid velocity, μ the fluid viscosity, and the fluid density. Some experiments are to be performed in a wind tunnel to determine the drag. What dimensionless parameters would you use to organize these data?