摘要：This paper describes experimental and analytical study on the behavior of falling water sheets. Falling water sheet flowing over a dam sometimes oscillates. It in turn causes vibrations of paper sliding doors or windowpanes of houses in the neighborhood since its frequency is low. Experimental results shows that the frequency of water sheet is the same as that of the pressure in the air chamber. Water sheet vibration is closely related with an air chamber behind the water sheet. The vibration can be suppressed by putting a baffle at an appropriate height in an air chamber. Further, water sheet behavior is analyzed. Comparing experimental data with analytical ones we conclude that sheet vibration occurs around the conditions where the work done by the water sheet on the air chamber reaches a maximum.
关键词：Self-Excited Vibration;Falling Water Sheet;Air Chamber;Vibration Suppression
