容器内回転円板に沿う層流非定常流

抄録

To know the unsteady laminar flow along an accelerating or decelerating disk in a closed cylindrical vessel, experimental and theoretical studies were performed. The unsteady pressure distribution on the rotating disk and the axial thrust were derived, and compared with that for the turbulent flow. As a result, the following points were made clear: (1) For the accelerating flow, the angular velocity of a center core at a small radii is considerably smaller than that at a large radii, under the laminar flow condition. This phenomenon is much different from the turbulent flow; (2) The time delay of flow is comparatively small owing to the viscous effect; (3) Calculated results coincide quite well with experimental ones.