Sheen H.J.Chen W.J.Jeng S.Y.2019-06-122019-06-12199611452https://www.scopus.com/inward/record.uri?eid=2-s2.0-0029657343&doi=10.2514%2f3.13106&partnerID=40&md5=ebd833ecad090e082e5942c1a4e6720ehttps://scholars.lib.ntu.edu.tw/handle/123456789/411031Recirculation zones of unconfined and confined annular swirling jetsjournal article10.2514/3.131062-s2.0-0029657343WOS:A1996TZ29300022