Low H T, Chew Y T
Department of Mechanical & Production Engineering, National University of Singapore.
Med Biol Eng Comput. 1991 Mar;29(2):217-21. doi: 10.1007/BF02447111.
An experimental investigation has been made on the pressure/flow behaviour of a collapsible tube. Of particular interest are the effects of upstream pressure fluctuations on the mean pressure/flow relationships. These mean pressure/flow relationships were found to exhibit features generally similar to the steady-flow situation, including flow limitation where the flow rate becomes independent of the driving pressure during the tube-collapsed phase. However, the tube collapsed under a higher downstream pressure and the maximum flow rate was reduced, when either the frequency or amplitude of the upstream pressure fluctuations was increased.
对可塌陷管道的压力/流量行为进行了实验研究。特别令人感兴趣的是上游压力波动对平均压力/流量关系的影响。发现这些平均压力/流量关系呈现出与稳定流情况总体相似的特征，包括在管道塌陷阶段流量限制，即流量速率变得与驱动压力无关。然而，当上游压力波动的频率或幅度增加时，管道在更高的下游压力下塌陷，且最大流量速率降低。
