Effect of valve spacing on peristaltic pumping.
Effect of valve spacing on peristaltic pumping.
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DOI：
10.1088/1748-3190/acbe85
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发表时间：
2023-03-09
影响因子：
3.4
通讯作者：
中科院分区：
文献类型：
--
作者：
对装有单向弹性阀的容器中由于周期性传播收缩波而产生的蠕动流体泵送进行了数值研究。结论是，容器内相对于收缩波长的阀门间距在提供有效泵送方面起着关键作用。当阀门间距与波长不匹配时，阀门异步打开，并且由两个连续阀门界定的容器段的体积周期性变化，从而引起体积流体泵送。容积式泵送可在不利的压力梯度下实现更高的泵送流量和效率。当阀门间距与收缩波长之比约为 时，出现最佳泵浦。这种泵送方式的特点是阀门打开的时间较长。研究结果有助于进一步了解淋巴系统的泵送特征，并为仿生泵送装置的设计提供见解。
Peristaltic fluid pumping due to a periodically propagating contraction wave in a vessel fitted with one-way elastic valves is investigated numerically. It is concluded that the valve spacing within the vessel relative to the contraction wavelength plays a critical role in providing efficient pumping. When the valve spacing does not match the wavelength, the valves open asynchronously and the volume of the vessel segments bounded by two consecutive valves changes periodically, thereby inducing volumetric fluid pumping. The volumetric pumping leads to higher pumping flowrate and efficiency against an adverse pressure gradient. The optimum pumping occurs when the ratio of valve spacing to contraction wavelength is about . This pumping regime is characterized by a longer period during which the valves are open. The results are useful for further understanding the pumping features of lymphatic system and provide insight into the design of biomimetic pumping devices.
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