Hsu S.-S.Kord?k J.Tr?vn??ek Z.AN-BANG WANG2020-05-052020-05-05201210653090https://www.scopus.com/inward/record.uri?eid=2-s2.0-84873507490&doi=10.1615%2fJFlowVisImageProc.2012001933&partnerID=40&md5=dde20d051260301a6ec2dff6c0c5f066https://scholars.lib.ntu.edu.tw/handle/123456789/490848A double-acting operation of a reciprocating jet-flow generator with hexagonally arranged hybrid synthetic jets is investigated experimentally. Unlike typical synthetic jets (i.e. zero-net-mass-flux jets), the hybrid synthetic jets are nonzero-net-mass-flux jets. Hot-wire measurements show enhancement of the extrusion volume to suction volume, and the ratio of 1.69 is achieved. The volumetric efficiency is 26% for the present hexagonally arranged hybrid synthetic jets, while it was 19% for the previous trigonally arranged variant. Although the velocity along the central SJ axis decreases rather quickly, the velocity is higher than that for the trigonally arranged variant.[SDGs]SDG7journal article10.1615/JFlowVisImageProc.20120019332-s2.0-84873507490