# Rotating reynolds number

From AMS Glossary

## rotating Reynolds number

(

*Or*rotation Reynolds number.) A nondimensional number arising in problems of a rotating viscous fluid.It may appear either as Ω

*h*^{2}/ν, in which case it equals one-half the square root of the Taylor number, or as Ω*r*^{2}/ν, where*r*is a suitable radius,*h*a representative depth, Ω the absolute angular speed, and ν the kinematic viscosity.