Linked from
The 83 pages that link to Reynolds number, each with the reason it gives.
Hagen–Poiseuille equationRelated: It helps determine whether the laminar-flow assumption is valid.
Torricelli's lawRelated: It helps determine whether flow near an opening is laminar or turbulent.
Multiphase flowRelated: It helps characterize the motion of individual phases and the mixture.
CurrentRelated: It helps predict whether a current will be laminar or turbulent.
Hydrodynamic modelRelated: It helps identify flow regimes and choose suitable modeling assumptions.
Classical fluidRelated: It predicts which flow patterns dominate in a given classical-fluid regime.
Faxén's lawRelated: A small Reynolds number justifies the Stokes-flow setting.
Flow instabilityRelated: It helps characterize when disturbances can overcome viscous damping.
Interactions in fluidsRelated: It predicts when inertial motion overcomes viscous smoothing.