rotating Reynolds number
rotating Reynolds number
[′rō‚tād·iŋ ′ren·əlz ‚nəm·bər] (fluid mechanics)
A nondimensional number arising in problems of a rotating viscous fluid and, in particular, in problems involving the agitation of such a fluid by an impeller, equal to the product of the square of the impeller's diameter and its angular velocity divided by the kinematic viscosity of the fluid. Symbolized Rer .