The Reynolds number (Re) is a dimensionless parameter used in fluid dynamics to characterize the flow regime of a fluid or gas around an object or through a conduit. It is a fundamental concept in aerodynamics and fluid mechanics.
- Re: Reynolds number (dimensionless)
- ρ (rho): Density of the fluid (kg/m³)
- V: Velocity of the fluid relative to the object (m/s)
- L: Characteristic length of the object (m)
- μ (mu): Dynamic viscosity of the fluid (Pa·s or N·s/m²)