Reynolds Number

Available identifiers

dimensionless quantity that is used to help predict similar flow patterns in different fluid flow situations

At low Reynolds numbers, flows tend to be dominated by laminar (sheet-like) flow, while at high Reynolds numbers, flows tend to be turbulent.

Defining Formula: $R e \equiv \frac{u L}{ν} = \frac{ρ u L}{μ}$
$L$ symbol represents Characteristic Length
$μ$ symbol represents Fluid Dynamic Viscosity (Free Flow)
$ν$ symbol represents Fluid Kinematic Viscosity (Free Flow)
$ρ$ symbol represents Fluid Density
$u$ symbol represents Fluid Velocity (Free Flow)