Abstract
Concerned with the flow oscillations in a collapsible tube, Starling resistor type oscillations have been widely investigated. This report describes the flow vibrations in the rubber tube which is locally squeezed by a kind of clamp. The phenomena, such as the change of tube cross section, the flow rate characteristics, and the fluid vibration behavior are explained under the conditions of the negative transmural (internal minus external (atmosphere)) pressure difference. The changes of the pressure and the cross section in the tube are measured in the decompression process of the reservoir. Some wave forms with flat phase in the pressure variations are related with those characteristics.
