{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,2]],"date-time":"2026-06-02T13:47:56Z","timestamp":1780408076750,"version":"3.54.1"},"reference-count":0,"publisher":"Cambridge University Press (CUP)","license":[{"start":{"date-parts":[[2000,11,3]],"date-time":"2000-11-03T00:00:00Z","timestamp":973209600000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Fluid Mech."],"published-print":{"date-parts":[[2000,11,10]]},"abstract":"<jats:p>The particle tracking (PT) technique is used to study turbulent diffusion of particle \npairs in a three-dimensional turbulent flow generated by two oscillating grids. The \nexperimental data show a range where the Richardson\u2013Obukhov law \n\u3008<jats:italic>r<\/jats:italic><jats:sup>2<\/jats:sup>\u3009 = <jats:italic>C<\/jats:italic>\u03b5<jats:italic>t<\/jats:italic><jats:sup>3<\/jats:sup> is \nsatisfied, and the Richardson\u2013Obukhov constant is found to be <jats:italic>C<\/jats:italic> = 0.5. A number of \nmodels predict much larger values. Furthermore, the distance\u2013neighbour function is \nstudied in detail in order to determine its general shape. The results are compared with \nthe predictions of three models: Richardson (1926), Batchelor (1952) and Kraichnan \n(1966<jats:italic>a<\/jats:italic>). These three models predict different behaviours of the distance\u2013neighbour \nfunction, and of the three, only Richardson's model is found to be consistent with the \nmeasurements. We have corrected a minor error in Kraichnan's (1996<jats:italic>a<\/jats:italic>) Lagrangian \nhistory direct interaction calculations with the result that we had to increase his \ntheoretical value from <jats:italic>C<\/jats:italic> = 2.42 to <jats:italic>C<\/jats:italic> = 5.5.<\/jats:p>","DOI":"10.1017\/s0022112000001658","type":"journal-article","created":{"date-parts":[[2002,7,27]],"date-time":"2002-07-27T09:23:06Z","timestamp":1027761786000},"page":"207-223","source":"Crossref","is-referenced-by-count":251,"title":["An experimental investigation of the relative diffusion of particle pairs in three-dimensional turbulent flow"],"prefix":"10.1017","volume":"422","author":[{"given":"S\u00d8REN","family":"OTT","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"JAKOB","family":"MANN","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"56","published-online":{"date-parts":[[2000,11,3]]},"container-title":["Journal of Fluid Mechanics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.cambridge.org\/core\/services\/aop-cambridge-core\/content\/view\/S0022112000001658","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,6,6]],"date-time":"2019-06-06T13:56:06Z","timestamp":1559829366000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.cambridge.org\/core\/product\/identifier\/S0022112000001658\/type\/journal_article"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2000,11,3]]},"references-count":0,"alternative-id":["S0022112000001658"],"URL":"https:\/\/doi.org\/10.1017\/s0022112000001658","relation":{},"ISSN":["0022-1120","1469-7645"],"issn-type":[{"value":"0022-1120","type":"print"},{"value":"1469-7645","type":"electronic"}],"subject":[],"published":{"date-parts":[[2000,11,3]]}}}