The performance of a journal bearing around a rotating shaft is a function of the following variables:
- Q, the rate of flow lubricating oil to the bearing in volume per unit time;
- D, the bearing diameter; N, the shaft speed in revolutions per minute;
- μ, the lubricant viscosity;
- ρ, the lubricant density; and
- σ, the surface tension of the lubricating oil.
Suggest appropriate parameters to be used in correlating experimental data for such a system.