Department of Applied Physics, Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183, Japan
(Received April 11, 1995; Accepted June 21, 1995)
Keywords: Rotating Drop, Surface Tension, Coriolis Force, Navier-Stokes Equation, Internal Velocity Field
Abstract. A theoretical model of the velocity field in a rotating spherical drop in an otherwise quiescent fluid of different viscosity is presented. We assume that the drop rotates steadily at a low angular velocity by an external torque. The velocity field inside the drop is calculated on the basis of the Navier-Stokes equation, and is compared with our previous experiment. A deviation of internal fluid motion from that of a rigid-body rotation is derived by taking account of the Coriolis force associated with the circulatory flow in the meridian plane.