Pipe Reynolds Number
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Formula, assumptions, and limits
| Symbol | Meaning | Unit |
|---|---|---|
| Fluid density | kg/m³ | |
| Average velocity | m/s | |
| Pipe internal diameter | m (mm/1000) | |
| Dynamic viscosity | Pa·s (cP/1000) |
Source: White - Fluid Mechanics
In short
Re = \u03c1\u00b7V\u00b7D/\u03bc for an internal pipe flow.