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针对本文设计的一种新型压电驱动的微流体主动混合器进行建模和仿真,对压电驱动振子进行模态分析,得到其固有频率和振型;以水为流体,对混合器和其内部流体进行流固耦合分析,得到压电振子对混合器内流场的扰动状况;分别在未施加激励和施加激励的情况下,对不同温度的水进行混合仿真实验,得到混合器内不同位置的混合状况。通过比较和分析仿真实验结果,验证了混合器的工作性能。
In this paper, a new type of piezoelectric-driven microfluidic active mixer is designed and simulated. The modal analysis of piezoelectric driving oscillator is carried out to obtain its natural frequency and mode shape. With water as the fluid, The internal fluid is subjected to fluid-solid coupling analysis, and the disturbance of the piezoelectric vibrator to the flow field in the mixer is obtained. Under the condition of no excitation and excitation, the mixed simulation experiments are carried out on the water with different temperature, Mixed status. By comparing and analyzing the simulation results, the working performance of the mixer is verified.