一种新型微流体主动混合器的仿真与分析

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。

Simulation and analysis of a new micro-fluidic active mixer

 The model of a new piezoelectric driven micro-fluidic active mixer was constructed and simulated. The natural frequency and mode shape were obtained from modal analysis of the piezoelectric ceramic. Selecting water as the fluid, the fluid structure interaction analysis on the mixer and its internal fluid was carried out, and the disturbance status of the piezoelectric vibrator affect on the flow in the mixer was obtained. On the premise of driven and undriven, the mixing experiments of water of different temperatures were simulated. The capability of the mixer was checked by comparing and analyzing the simulation results.