Sommerfeld Number Calculator
Posted by Dinesh onOnline Sommerfeld equation calculator to calculate sommerfeld number or bearing characteristic number for hydrodynamic lubrication analysis.
The Sommerfeld number (S), or bearing characteristic number, is a dimensionless quantity used extensively in hydrodynamic lubrication analysis. The Sommerfeld number is very important in lubrication analysis because it contains all the variables normally specified by the designer.
Sommerfeld Number Calculation
Formula:
S = [r2 ÷ c] × [µN ÷ P]
where,| r is the shaft radius |
| c is the radial clearance |
| µ is the absolute viscosity of the lubricant |
| N is the speed of the rotating shaft |
| P is the load per unit of projected bearing area |
| S is the Sommerfeld Number or bearing characteristic number |