Pressure/flow behaviour in collapsible tube subjected to forced downstream pressure fluctuations
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Updated: Nov 2, 2026

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Published on: September 2, 2009
H T Low1, Y T Chew, S H Winoto
1Department of Mechanical & Production Engineering, National University of Singapore.
Abstract:
An experimental investigation has been made into the pressure/flow behaviour of a collapsible tube subjected to downstream pressure fluctuations. These downstream pressure waves are observed to be transmitted upstream beyond the point of collapse. The mean flow rate is not significantly affected by the amplitude or frequency of pressure fluctuations. However, the oscillatory flow amplitude is reduced at the higher frequency. The mean flow rate also remains independent of the mean driving pressure.
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