Design and Analysis of Multiple Inlet–Multiple Outlet Piezoelectric Actuated Valveless Micropump for Micro Drug Delivery Application

This paper deals with the design of multiple inlet- multiple outlet piezoelectric valveless micropump intending for applications in the medical field such as drug delivery, lab-on-chip devices, smart surgical tools, blood pressure sensor and glucose sensors. An extensive analysis is carried out using benchmark FEM tool COMSOL multiphysics to predict the accurate behavior of the micropump under different condition. The comparative analysis among different types of configuration has been performed and the best one among these is listed and explained with the help of parameters such as outlet flow velocity, flow rate and back pressure. It is evident from the results that 2-inlet 1-outlet piezoelectric valveless micropump seems to efficient as its maximum flow rate is reported as 35.85 l/min which is greater as compared to 2-inlet 2-outlet micropump whose maximum flow rate is 11.6 l/min. The flow is considered as laminar flow owing to Reynolds number is less than 2000. Different studies are conducted by changing the parameters which reveals that the flow rate is affected with the change in average inlet flow velocity of working fluid, diameter of the micropump, length of diffuser/nozzle. The study will help researches, scientists and medical personnel to establish a precise and controlled drug delivery using micropump in biomedical applications.