中文摘要：

提出利用结构分析软件ANSYS和流体分析软件ANSYS CFX对无阀压电泵进行流固耦合仿真分析,以研究无阀压电泵的输出性能。分别对进口在中间出口在一侧、出口在中间进口在一侧、进出口对称布置的3种不同结构形式的无阀压电泵进行了流固耦合仿真分析。结果显示,上述3种无阀压电泵中,出口在中间进口在一侧结构形式的无阀压电泵的宏观输出流量最大。制作了3种无阀压电泵的试验样机,并搭建了相应的试验测试系统,在幅值为45 V、频率为0~700Hz的正弦信号激励下对其输出流量进行了测试。结果表明,3种不同结构形式的无阀压电泵的最大输出流量分别为3.8、6.0和4.0ml/min,出口在中间进口在一侧的压电泵输出流量最大,与流固耦合仿真分析的结果相吻合,验证了本文提出的流固耦合仿真分析的方法可以指导压电泵的设计。

英文摘要：

The structural software ANSYS and the fluid software ANSYS CFX.were used to simulate the structural-fluid coupling of a valveless piezoelectric pump and to research its output performance.Three different kinds of valveless pumps,the pump with middle inlet,the pump with middle outlet and the pump with side inlet/outlet were designed.The structural-fluid coupling on these valveless piezoelectric pumps was simulated by the software ANSYS and the software ANSYS CFX.The simulation results show that the pump with middle outlet has the maximum output flow rate.The prototypes of the three kinds of piezoelectric pumps were fabricated and a corresponding testing system for the pumps was set up and test experiments were performed under a sinusoidal AC excitation signal of 45 Vand the frequency of 0-700 Hz.The results show that the maximum output flow rates of the three kinds of valveless pumps are 3.8 ml/min,6.0 ml/min and 4.0ml/min,respectively.Among them the pump with middle outlet has the maximum output flow rate,which is consistent with the results of the structural-fluid coupling simulation and verifies that the simulationmethod proposed by this paper can guide the design of piezoelectric pumps.