In this work, topology optimization was used to design a fixed-geometry fluidic diode of high diodicity, defined as the ratio of pressure drop of reverse flow to forward flow. Next, the fluidic diode was used in a valveless micropump. A three-dimensional and unsteady numerical analysis of fluid flow inside the micropump with the optimized diode was conducted by Computational Fluid Dynamics (CFD). Performance of a nozzle-diffuser type diode in the valveless micropump was also evaluated under the same conditions, for comparison. Both types of micropumps were fabricated and tested. The results show that the micropump with the designed fluidic diode can reach a flow rate of up to 33.5 ml/h, which is consistent with the simulation results and 2.2 times that of the nozzle-diffuser type micropump.
|Original language||English (US)|
|Title of host publication||34th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2021|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|Number of pages||4|
|State||Published - Jan 25 2021|
|Event||34th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2021 - Virtual, Gainesville, United States|
Duration: Jan 25 2021 → Jan 29 2021
|Name||2021 IEEE 34th International Conference on Micro Electro Mechanical Systems (MEMS)|
|Conference||34th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2021|
|Period||1/25/21 → 1/29/21|
Bibliographical noteFunding Information:
Portions of this work were conducted in the Minnesota Nano Center, which is supported by the National Science Foundation through the National Nano Coordinated Infrastructure Network (NNCI) under Award Number ECCS-1542202. This work was partially sponsored by Environment and Natural Resources Trust Fund (ENRTF) funding in Minnesota State. The numerical part of this work was carried out using computing resources at the University of Minnesota Supercomputing Institute.
© 2021 IEEE.
- Fluidic Diode
- Topology Optimization
- Valveless Pump