This paper presents a general lumped element mathematical model of the operation of a synthetic jet actuator with a piezoelectric driver in order to investigate the frequency response of the device. The model shows that the system behaves as a two-coupled oscillators device. Analytical expressions are given in order to predict the two peak frequencies, corresponding to the modified Helmholtz and first-mode structural resonance frequencies. The model has been validated experimentally through systematic experimental tests carried out on three devices having different mechanical and geometrical properties. A very strict agreement between numerical and experimental findings is found.
Fluid-structure coupling effects in synthetic jet devices / Girfoglio, Michele; Chiatto, Matteo; DE LUCA, Luigi. - (2013), pp. 1-10. (Intervento presentato al convegno AIDAA NAPOLI XXII Conference tenutosi a Napoli nel September 9-12, 2013).
Fluid-structure coupling effects in synthetic jet devices
GIRFOGLIO, MICHELE;CHIATTO, MATTEO;DE LUCA, LUIGI
2013
Abstract
This paper presents a general lumped element mathematical model of the operation of a synthetic jet actuator with a piezoelectric driver in order to investigate the frequency response of the device. The model shows that the system behaves as a two-coupled oscillators device. Analytical expressions are given in order to predict the two peak frequencies, corresponding to the modified Helmholtz and first-mode structural resonance frequencies. The model has been validated experimentally through systematic experimental tests carried out on three devices having different mechanical and geometrical properties. A very strict agreement between numerical and experimental findings is found.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
