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An investigation into a piezoelectrically actuated nebulizer with μEDM-made micronozzle array
- Source :
- Experimental Thermal and Fluid Science. 31:1147-1156
- Publication Year :
- 2007
- Publisher :
- Elsevier BV, 2007.
-
Abstract
- This study uses micromachining techniques to fabricate a piezoelectrically actuated nebulizer with an easily assembled structure. The experimental measurement and numerical simulation have been performed to gain the insight of atomized droplet behavior and fluidic mechanics for the developed devices. It is expected that a better understanding of these physical insights can lead to various potential applications. Based on the results obtained from a series of investigations, this study has found the optimal operating conditions for the proposed nebulizer. Various test fluids with different viscosities and surface tensions are considered, including water, dilute alcohol, oil, and a honey-like fluid. A spray stability analysis is performed in which the operating voltage and frequency of the piezoelectric actuator in the nebulizer are varied and the corresponding changes in the ejected particle size, flow rate and ejection distance examined. Air trapped within the nebulizer reservoir adversely affects the injection performance. Hence, the effect of the operating parameters on the volume of air ingested into the reservoir during the nebulizer operation is investigated and discussed.
- Subjects :
- Fluid Flow and Transfer Processes
Materials science
Computer simulation
Mechanical Engineering
General Chemical Engineering
Microfluidics
Aerospace Engineering
Mechanical engineering
Volumetric flow rate
Surface micromachining
Nebulizer
Nuclear Energy and Engineering
Volume (thermodynamics)
Fluidics
Particle size
Subjects
Details
- ISSN :
- 08941777
- Volume :
- 31
- Database :
- OpenAIRE
- Journal :
- Experimental Thermal and Fluid Science
- Accession number :
- edsair.doi...........f72dced88cc687ea6ec41a986e131efe