{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,13]],"date-time":"2026-03-13T22:46:27Z","timestamp":1773441987214,"version":"3.50.1"},"reference-count":16,"publisher":"AIP Publishing","issue":"12","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2010,12,1]]},"abstract":"<jats:p>Direct numerical simulations at Reynolds numbers ranging from Re\u03bb=30 to 160 show that the thickness \u03b4\u03c9 of the turbulent\/nonturbulent (T\/NT) interface in planar jets is of the order of the Taylor scale \u03b4\u03c9\u223c\u03bb, while in shear free, irrotational\/isotropic turbulence is of the order of the Kolmogorov microscale \u03b4\u03c9\u223c\u03b7. It is shown that \u03b4\u03c9 is equal to the radius of the large vorticity structures (LVSs) in this region, \u03b4\u03c9\u2248RLVS. Thus, the mean shear and the Reynolds number affect the T\/NT interface thickness insofar as they define the radial dimension of the LVS near the T\/NT interface.<\/jats:p>","DOI":"10.1063\/1.3527548","type":"journal-article","created":{"date-parts":[[2010,12,21]],"date-time":"2010-12-21T23:58:10Z","timestamp":1292975890000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":94,"title":["The thickness of the turbulent\/nonturbulent interface is equal to the radius of the large vorticity structures near the edge of the shear layer"],"prefix":"10.1063","volume":"22","author":[{"given":"Carlos B.","family":"da Silva","sequence":"first","affiliation":[{"name":"Technical University of Lisbon IDMEC\/IST, , Pav. Mec\u00e2nica I, 1 o Andar, Av. Rovisco Pais, 1049-001 Lisboa, Portugal"}]},{"given":"Rodrigo R.","family":"Taveira","sequence":"additional","affiliation":[{"name":"Technical University of Lisbon IDMEC\/IST, , Pav. 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