A numerical and experimental characterization of an innovative multi-slotted synthetic jet issuing in a quiescent environment has been carried out. A Laser Doppler Vibrometer (LDV) has been employed to obtain the vibrational modes of the diaphragm for a wide range of frequencies, whereas Hot-wire measurements and Particle Image Velocimetry (PIV) have been used to study the external flow field. A dedicated Lumped Element Model (LEM) has been properly developed for the present actuator; the LEM has been calibrated on LDV and Hot-wire data, and has been used for the optimized design of the actuator for the control of a separated flow. The numerical characterization consists in direct numerical simulations of the flow field generated by the actuator, carried out with the OpenFOAM code. Simulations allowed to detect the vortical structures generated at the orifice exit, and analyze their motion while moving downstream. Interaction and convergence between adjacent jets in the far-field have been also investigated.

Multi-slotted synthetic jet actuator for flow control of separated flows / Chiatto, Matteo; Palumbo, Andrea; DE FELICE, Giuseppe; DE LUCA, Luigi. - (2019), pp. 1-2. (Intervento presentato al convegno The 15th International Conference on Fluid Control, Measurements and Visualization tenutosi a Naples ITALY nel 27-30 maggio 2019).

Multi-slotted synthetic jet actuator for flow control of separated flows

Matteo Chiatto
;
Andrea Palumbo;Giuseppe de Felice;Luigi de Luca
2019

Abstract

A numerical and experimental characterization of an innovative multi-slotted synthetic jet issuing in a quiescent environment has been carried out. A Laser Doppler Vibrometer (LDV) has been employed to obtain the vibrational modes of the diaphragm for a wide range of frequencies, whereas Hot-wire measurements and Particle Image Velocimetry (PIV) have been used to study the external flow field. A dedicated Lumped Element Model (LEM) has been properly developed for the present actuator; the LEM has been calibrated on LDV and Hot-wire data, and has been used for the optimized design of the actuator for the control of a separated flow. The numerical characterization consists in direct numerical simulations of the flow field generated by the actuator, carried out with the OpenFOAM code. Simulations allowed to detect the vortical structures generated at the orifice exit, and analyze their motion while moving downstream. Interaction and convergence between adjacent jets in the far-field have been also investigated.
2019
Multi-slotted synthetic jet actuator for flow control of separated flows / Chiatto, Matteo; Palumbo, Andrea; DE FELICE, Giuseppe; DE LUCA, Luigi. - (2019), pp. 1-2. (Intervento presentato al convegno The 15th International Conference on Fluid Control, Measurements and Visualization tenutosi a Naples ITALY nel 27-30 maggio 2019).
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/753404
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact