CAJ | 학술논문

采用任意拉格朗日—欧拉（ALE）描述建立了无阀微泵的静电-结构-流体全耦合三维模型,数值仿真表明：泵内流体的动态特性与泵膜的运动存在着密切的关系;扩散/收缩口单元两端的压力差必须达到一定值后才有＂整流＂泵送效用;泵腔内流体压力的分布几乎一致;流体流动的最大雷诺数远小于宏观条件下认定的临界雷诺数;流体黏滞损失的非线性不容忽视。
채용임의랍격랑일—구랍（ALE）묘술건립료무벌미빙적정전-결구-류체전우합삼유모형,수치방진표명：빙내류체적동태특성여빙막적운동존재착밀절적관계;확산/수축구단원량단적압력차필수체도일정치후재유＂정류＂빙송효용;빙강내류체압력적분포궤호일치;류체류동적최대뢰낙수원소우굉관조건하인정적림계뢰낙수;류체점체손실적비선성불용홀시。
A 3-Dimensional accurate analysis of the electrostatic valveless micropump involved in electrostatic dynamics,structural dynamics and fluid dynamics of the system.This was made by using multi-field coupled analysis.The results show that the dynamic characteristics of fluid in the micropump are dependent highly on the vibration of flexible membrane.The flow rectification function of the diffuser/nozzle element will work only after the pressure difference between the two ends of the element reaches a critical value.In the pump chamber,the fluidic press distribution almost independent of the depth variation.The maximum of Reynolds numbers is far less than the traditional critical Reynolds number.Due to the increasing demands for accuracy,the nonlinear features of viscous loss of the fluid can no longer be neglected or simplified,but have to be taken into account in detail.