{"id":429,"date":"2015-04-01T21:09:40","date_gmt":"2015-04-01T12:09:40","guid":{"rendered":"http:\/\/kyoryu.scphys.kyoto-u.ac.jp\/wordpress\/?p=429"},"modified":"2015-04-01T21:09:40","modified_gmt":"2015-04-01T12:09:40","slug":"210940","status":"publish","type":"post","link":"http:\/\/kyoryu.scphys.kyoto-u.ac.jp\/?p=429","title":{"rendered":"\u6d41\u4f53\u7269\u7406\u5b66\u30bc\u30df\u30ca\u30fc\u30eb2006\/10\/27"},"content":{"rendered":"<p>_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/<br \/>\n_\/<br \/>\n_\/ \u6d41\u4f53\u529b\u5b66\u30bb\u30df\u30ca\u30fc \uff12\uff10\uff10\uff16 No. \uff11\uff10<br \/>\n_\/<br \/>\n_\/ \u65e5 \u6642 : \uff10\uff16\u5e74 \uff11\uff11\u6708 \uff16 \u65e5 (\u6708) \uff11\uff15\uff1a\uff10\uff10\u301c\uff11\uff16\uff1a\uff13\uff10<br \/>\n_\/<br \/>\n_\/ \u5834 \u6240 : \u4eac\u5927\u6570\u7406\u7814 \uff10\uff10\uff19\u53f7\u5ba4<br \/>\n_\/<br \/>\n_\/ \u8b1b \u5e2b\uff1a Walter Pauls<br \/>\n_\/ Observatoire de la Cote d&#8217;Azur (France) and<br \/>\n_\/ Fakultat fur Physik, Universitat Bielefeld (Germany)<br \/>\n_\/<br \/>\n_\/ \u984c \u76ee\uff1a Passive scalar diffusion at high Peclet numbers in<br \/>\n_\/ stationary flows<br \/>\n_\/<br \/>\n_\/ \u5185 \u5bb9 : We study the advection of passive scalar in steady 2D flows<br \/>\n_\/ at high Pecl\u00a5&#8217;et numbers (the Pecl\u00a5&#8217;et number is inversely<br \/>\n_\/ proportional to the diffusivity of the tracer). We analyze<br \/>\n_\/ the asymptotic properties of the stochastic process generated<br \/>\n_\/ by a prescribed stationary velocity field (determined by<br \/>\n_\/ its stream function H) which is perturbed by random noise<br \/>\n_\/ (which is the Brownian motion rescaled by the diffusivity).<br \/>\n_\/ The asymptotic behaviour of this process depends heavily on<br \/>\n_\/ the geometry of the streamlines and determines the effective<br \/>\n_\/ diffusivity of a tracer in the flow. For example, when the domain<br \/>\n_\/ is the whole plane the decisive criterion is the boundedness<br \/>\n_\/ of the levellines of H.<br \/>\n_\/<br \/>\n_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/<\/p>\n<p>\u623b\u308b [http:\/\/www.kyoryu.scphys.kyoto-u.ac.jp\/semi\/semi2.html]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/_\/ _\/ _\/ \u6d41\u4f53\u529b\u5b66\u30bb\u30df\u30ca\u30fc \uff12\uff10\uff10\uff16 No. \uff11\uff10 _\/ _ [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16,26],"tags":[],"class_list":["post-429","post","type-post","status-publish","format-standard","hentry","category-16","category-26"],"_links":{"self":[{"href":"http:\/\/kyoryu.scphys.kyoto-u.ac.jp\/index.php?rest_route=\/wp\/v2\/posts\/429","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/kyoryu.scphys.kyoto-u.ac.jp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/kyoryu.scphys.kyoto-u.ac.jp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/kyoryu.scphys.kyoto-u.ac.jp\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/kyoryu.scphys.kyoto-u.ac.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=429"}],"version-history":[{"count":0,"href":"http:\/\/kyoryu.scphys.kyoto-u.ac.jp\/index.php?rest_route=\/wp\/v2\/posts\/429\/revisions"}],"wp:attachment":[{"href":"http:\/\/kyoryu.scphys.kyoto-u.ac.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=429"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/kyoryu.scphys.kyoto-u.ac.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=429"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/kyoryu.scphys.kyoto-u.ac.jp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=429"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}