Impingement heat transfer to the synthetic jet issuing from a nozzle with an oscillating cross section

0523708 - ÚT 2021 RIV FR eng J - Článek v odborném periodiku
Trávníček, Zdeněk - Antošová, Zuzana
Impingement heat transfer to the synthetic jet issuing from a nozzle with an oscillating cross section.
International Journal of Thermal Sciences. Roč. 153, July 2020 (2020), č. článku 106349. ISSN 1290-0729. E-ISSN 1778-4166
Institucionální podpora: RVO:61388998
Klíčová slova: synthetic jet * impinging jet * flexible nozzle
Obor OECD: Thermodynamics
Impakt faktor: 3.744, rok: 2020
Způsob publikování: Open access
https://www.sciencedirect.com/science/article/pii/S1290072919319714/pdfft?isDTMRedir=true&download=true

Following biomimetic principles, the novel synthetic jet actuator (SJA) is proposed. Two independent actuating systems are used (unique to this study): the diaphragm is driven electrodynamically and the nozzle walls are driven using a pair of piezoelectric transducers. Four independent experimental methods were used to quantify SJA performance. It was concluded that the momentum flux and the heat transfer rate can be enhanced by the phase delay between the diaphragm and nozzle wall cycles. The optimal effect was found at the phase shift of 270° for the ratio of the cross-section areas during the extrusion and suction of 0.74.
Trvalý link: http://hdl.handle.net/11104/0310376