For 10 points, identify this dimensionless number used to determine whether a flow is laminar or turbulent.
This quantity defines whether one uses the Colebrook equation or the equation 64 over this quantity to find the Darcy friction factor. This quantity is found on the x-axis of Moody diagrams, where it is given as density times velocity times characteristic length, all over mu. This quantity can be derived by using characteristic velocity and length scales to nondimensionalize the four variables in the Navier-Stokes equation. Both Stokes's law and the Hagen-Poiseuille equation apply only for small values of this quantity. It is the ratio of inertial to viscous forces. For 10 points, identify this dimensionless number used to determine whether a flow is laminar or turbulent.
This quantity defines whether one uses the Colebrook equation or the equation 64 over this quantity to find the Darcy friction factor.
Reynolds number [or Re]