Title :
Valveless acoustic standing wave micropump for biomedical applications: A numerical study
Author :
Nabavi, Majid ; Siddiqui, Kamran ; Dargahi, Javad
Author_Institution :
Department of Mechanical and Industrial Engineering, Concordia University, 1455 de Maisonneuve Blvd. West, Montreal, Quebec, Canada H3G 1M8
Abstract :
The operation principle of the valveless acoustic standing wave micropump is described. Time-variant flow structures through the planar diffuser-nozzle element of this micropump for different values of the divergence angle of the diffuser-nozzle element at excitation frequency of ƒ = 20 kHz are numerically investigated. The variations of micropump flow rate, pressure loss coefficients of the nozzle and diffuser, and diffuser efficiency are shown as functions of θ. The higher micropump flow rate is found to be achieved at larger values of θ. However, increasing θ from 45° to 60° shows no significant increase in the net flow rate. The results also show that the maximum diffuser efficiency is achieved at θ = 45.
Keywords :
Acoustic applications; Acoustic waves; Biomedical acoustics; Frequency; Java; Magnetohydrodynamics; Micropumps; Propulsion; Pumps; Valves; Micropump; Microtechnology; Nozzle-diffuser; Numerical simulation; Acoustics; Computer Simulation; Electric Capacitance; Electric Impedance; Electronics; Equipment Design; Infusion Pumps, Implantable; Microchemistry; Microfluidics; Miniaturization; Models, Theoretical; Signal Processing, Computer-Assisted; Transducers;
Conference_Titel :
Engineering in Medicine and Biology Society, 2008. EMBS 2008. 30th Annual International Conference of the IEEE
Conference_Location :
Vancouver, BC
Print_ISBN :
978-1-4244-1814-5
Electronic_ISBN :
1557-170X
DOI :
10.1109/IEMBS.2008.4649768