Kinematic viscosity for water

The kinematic viscosity (also called momentum diffusivity) is the ratio of the dynamic viscosity $\mu$ to the density $\rho$.

It is a convenient concept when analyzing the Reynolds number, which expresses the ratio of the inertial forces to the viscous forces.

The sources are:

$\frac{\eta_{w}}{\rho_{w}}$general equation
$- 1.312 \cdot 10^{-8} \theta_{w}^{3} + 1.2973 \cdot 10^{-6} \theta_{w}^{2} - 6.0154 \cdot 10^{-5} \theta_{w} + 0.001792$fresh water
$\rho_{w}$
Density of water [kg/m$^3$]
$\theta_{w}$
Water temperature [$^{\circ}$C]
Used in
$\eta_{w}$
$\mathrm{Re}_{w}$
Choices
Liquid0.01$^{\circ}$C10$^{\circ}$C20$^{\circ}$C25$^{\circ}$C30$^{\circ}$C
Fresh water1.7918e-061.3065e-061.0035e-068.927e-078.007e-07