The gas flow rate increase obtained by an oscillating piezoelectric actuator on a micronozzle
| Autor: | Mauro Sergio Dorsa Cattani, Rodrigo Sergio Wiederkehr, F.T. Degasperi, Jürgen Brugger, Maria Cecília Barbosa da Silveira Salvadori |
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| Rok vydání: | 2008 |
| Předmět: |
Overall pressure ratio
Materials science Nozzle Flow (psychology) Metals and Alloys Bimorph Condensed Matter Physics Surfaces Coatings and Films Electronic Optical and Magnetic Materials Volumetric flow rate Electrode Electronic engineering Electrical and Electronic Engineering Composite material Actuator Instrumentation Voltage |
| Zdroj: | Sensors and Actuators A: Physical. 144:154-160 |
| ISSN: | 0924-4247 |
| DOI: | 10.1016/j.sna.2007.12.024 |
| Popis: | Micronozzles with piezoelectric actuator were fabricated and investigated. The micronozzles were fabricated in glass substrates using a powder-blasting technique, and the actuator is a bimorph structure made from a piezoelectric polymer. The actuator was located at the nozzle outlet, and was driven in an oscillating mode by applying an alternating voltage across the actuator electrodes. With a pressure difference between inlet and outlet, the gas flow rate through the device was increased. This effect was quantified, and compared to a similar micronozzle with no actuator. The increase in the flow rate was defined as the gas flow through the micronozzle with actuator oscillating minus the gas flow without actuator, was found to depend on the inlet pressure, the pressure ratio, and the nozzle throat diameter. |
| Databáze: | OpenAIRE |
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