Dimensionless quantity calculated as the ratio of momentum diffusivity (kinematic viscosity) \nu to thermal diffusivity a:
{\rm Pr} = \frac{\nu}{a} |
For most gases over a wide range of temperature and pressure, Pr is approximately constant.
Dimensionless quantity calculated as the ratio of momentum diffusivity (kinematic viscosity) \nu to thermal diffusivity a:
{\rm Pr} = \frac{\nu}{a} |
For most gases over a wide range of temperature and pressure, Pr is approximately constant.