抄録
We experimentally studied point sink flows in a linearly stratified fluid under the rotating system. When the system is not rotating, only a layer of fluid adjacent to the sink level is withdrawn. It is called selective withdrawal, and" we carry out experiments to examine how it behaves in a rotating system. A linearly .stratified fluid is filled in a water tank and a point sink is located either in the middle of the tank or near the wall. The flow is visualized by PIV. When the sink is located in the middle of the tank, the withdrawal-layer thickness becomes wider as time elapses, whereas if the sink is located near the wall, the withdrawal-layer thick ness is almost unchanged in time.
