Reynolds Number

Reynolds number is proportional to { (inertial force) / (viscous force) } and is used in momentum, heat, and mass transfer to account for dynamic similarity. It is normally defined in one of the following forms

Reynolds Number Calculator

Formula 1: Re = (D * V * ρ) / μ

Characteristic Length (D): Velocity (V): Density (ρ): Viscosity (μ):

Reynolds Number (Formula 1):

Formula 2: Re = (D * (V * ρ)) / μ

Characteristic Length (D): Velocity (V): Density (ρ): Viscosity (μ):

Reynolds Number (Formula 2):

D	=	Characteristic length
G	=	Mass velocity
mu	=	Viscosity
rho	=	Density
V	=	Velocity