Reynolds Number Calculator

Determine flow regime

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Reynolds Number

Determine flow regime

$$Re = \dfrac{\rho v D}{\mu}$$

Pipe: $Re<2300$ laminar, $2300{-}4000$ transitional, $>4000$ turbulent.

ρ (kg/m³)

v (m/s)

D (m)

μ (Pa·s)

All fields required; μ nonzero.

Reynolds Number

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