Studies have shown that the valveless piezoelectric pump with streamline flow tubes (VPPSFTs) can increase the flow rate while reducing the vortex, which has a broad application prospect and conforms to the huge potential demand in the fields of medical treatment, sanitation, and health care. The flow runner of the VPPSFT was designed as two segments with a smooth transition between the hyperbola segment and the arc segment. However, the effect of the radius of the arc segment on pump performance is not clear. Therefore, three groups of VPPSFT with arc segments of different curvature radii were designed in this study, and the influence of curvature radius of arc segment on the pump performance was explored. On the basis of the theoretical analysis of fluid continuity and conservation of energy, the structure of VPPSFT was designed, the experimental test was carried out, and the finite element simulation software was used for numerical analysis. The results show that the output performance increases with the increase in the radius of the arc segment, and the maximum flow rate was 116.78 mL/min. The amplitude and the flow rate are almost the same trend as the frequency. This study improves the performance of the valveless piezoelectric pump and provides reference for the structure design of VPPSFT.

中文翻译：

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流线型流量管设计参数对泵性能的影响研究

研究表明，带流线式流量管的无阀压电泵（VPPSFTs）可以提高流量，同时减少涡流，具有广阔的应用前景，符合医疗，卫生和保健领域的巨大潜在需求。VPPSFT的流道设计为两个部分，在双曲线部分和弧形部分之间具有平滑过渡。但是，弧段半径对泵性能的影响尚不清楚。因此，本研究设计了三组具有不同曲率半径的弧段的VPPSFT，并探讨了弧段曲率半径对泵性能的影响。在对流体连续性和能量守恒进行理论分析的基础上，设计了VPPSFT的结构，进行了实验测试，并使用了有限元模拟软件进行了数值分析。结果表明，输出性能随弧段半径的增加而增加，最大流量为116.78 mL / min。振幅和流速与频率几乎是相同的趋势。该研究提高了无阀压电泵的性能，为VPPSFT的结构设计提供了参考。