        MyCTMain  Reynolds number

Fluid dynamics index               The Reynolds number (Re) is caculated from the equation Re=VL/ν (where V is the average fluid velocity and ν is the kinematic viscosity), remembering that the dynamic viscosity μ=ν⋅ρ (where ρ is density).              Dynamic viscosity: Pa⋅s cP Density: kg/m³ g/m³ g/cm³ oz/in³ lb/ft³ Kinematic viscosity: Stokes cSt Velocity: m/s --- METRIC --- cm/s km/s -- IMPERIAL -- inches/second feet/second feet/minute - RECIPROCAL - min/mile min/km min/5 km min/10 km --- OTHER --- km/h mph miles/second knots furl's/f'night Mach c (light speed) Characteristic length: m --- METRIC --- pm nm microns (µm) mm cm km -- IMPERIAL -- mil 1/16 inch inches feet yards miles - SCIENTIFIC - Planck Bohrs Angstrom light-seconds light-years au parsecs --- OTHER --- points cubits fathoms rods chains football fields furlongs Roman miles nautical miles leagues Reynolds number:   Enter either the dynamic viscosity and density, or the kinematic viscosity. The Reynolds number is proportional to the ratio of inertial to viscous effects. It relates to the amount of disorder in the flow, with a larger nunber (e.g. over ~2400 in a circular pipe) indicating turbulent flow. For calculation, the "characteristic length" should be taken according to convention. For example, in a pipe it is the hydraulic diameter, and in laminar flow over a plate, it is the plate length.          