中文摘要：

为分析阻流体无阀压电泵用半球缺横向排列的流阻特性及对泵输出性能的影响,对泵腔内多个半球缺横向排列的流阻作用规律进行了研究。基于单个半球缺绕流阻力的研究成果,在分析横向排列半球缺的影响因素基础上,通过试验得出了两个半球缺横向排列流阻干扰系数及绕流阻力系数的作用规律;进而推导了多个半球缺横向流阻干扰系数及绕流阻力系数的理论计算;通过对4个横向排列半球缺的流阻及泵流量试验,验证了该理论推导用于分析、预测半球缺阻流体无阀压电泵流阻特性和理论流量的可行性。在驱动电压为120 V、驱动频率为6 Hz时,得到了44.78 mL/min的泵流量,理论和试验流量的平均偏差为39.34%。

英文摘要：

In order to analyze the flow resistance property of the hemisphere-segment arranged in transverse for the valve-less piezoelectric pump with bluff-body and the influence of the hemispheresegment on the output performance of the pump, the flow resistance action law of multiple hemispheresegments arranged in transverse in pump chamber was studied. Based on the research of single hemisphere-segment flow resistance and the analysis of influence factors for hemisphere-segments arranged in transverse, the action laws of flow resistance interference coefficient and flow resistance coefficient for two hemisphere-segments arranged in transverse were obtained by experiments. Then the theoretical calculation of transverse flow resistance interference coefficient and flow resistance coefficient for multiple hemisphere-segments was derived. And the experiments on flow resistance and flow rate were carried out by using four hemisphere-segments arranged in transverse. The theoretical derivation was proved to be feasible for analyzing and predicting the flow resistance property and the flow rate of such valve-less piezoelectric pump with bluff-body. When the driving voltage was set to 120 V and driving frequency was set to 6 Hz, the flow rate of the pump reached to 44.78 mL/min. And the average deviation between theoretical and experimental was 39.34%.