Artículos de revistas
The gas flow rate increase obtained by an oscillating piezoelectric actuator on a micronozzle
Fecha
2008-05-28Registro en:
Sensors and Actuators A-physical. Lausanne: Elsevier B.V. Sa, v. 144, n. 1, p. 154-160, 2008.
0924-4247
10.1016/j.sna.2007.12.024
WOS:000255993200022
Autor
Universidade de São Paulo (USP)
Ecole Polytech Fed Lausanne
Universidade Estadual Paulista (Unesp)
Institución
Resumen
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. (C) 2008 Elsevier B.V. All rights reserved.