{"id":19944,"date":"2018-03-09T09:09:05","date_gmt":"2018-03-09T09:09:05","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/interface-dynamics-in-two-dimensional-viscous-flows\/"},"modified":"2018-03-09T09:09:05","modified_gmt":"2018-03-09T09:09:05","slug":"interface-dynamics-in-two-dimensional-viscous-flows","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/fisica\/interface-dynamics-in-two-dimensional-viscous-flows\/","title":{"rendered":"Interface dynamics in two-dimensional viscous flows"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Eduard Paun\u00e9 Xuriguera <\/strong><\/h2>\n<p>En esta tesis se han estudiado diversos aspectos de la din\u00e1mica interfacial en flujos viscosos bidimensionales en celdas de hele-shaw. Primero, se ha estudiado la influencia de la tensi\u00f3n superficial sobre la din\u00e1mica de soluciones expl\u00edcitas dependientes del tiempo para tensi\u00f3n superficial cero. Segundo, se ha estudiado la influencia del contraste de viscosidades en la din\u00e1mica interfacial. Y por \u00faltimo, se ha modelado el flujo en una celda de hele-shaw con desorden en el espaciado entre placas.  respecto a la influencia de la tensi\u00f3n superficial (b) sobre la din\u00e1mica, se ha obtenido que las soluciones de b=o dejan de ser f\u00edsicas de forma gen\u00e9rica para tiempos de orden uno, ya que no son topol\u00f3gicamente equivalente al problema f\u00edsico (con b=o+). Hemos propuesto un escenario de solvabilidad din\u00e1mica susceptible de ser extendido a problemas similares (por ejemplo solidificaci\u00f3n). De acuerdo con este escenario la tensi\u00f3n superficial modifica la estructura del espacio de fases, restaurando la hiperbolicidad (estructura de punto silla) de los puntos fijos de varios dedos. Se ha desarrollado un c\u00f3digo num\u00e9rico para b&gt;0, y se ha aplicado este c\u00f3digo al estudio de la din\u00e1mica con b finita, obteniendo que el flujo f\u00e1sico de b=0 se ve modificado dram\u00e1ticamente por la tensi\u00f3n superficial.  se ha obtenido, mediante c\u00e1lculo num\u00e9rico, que la cuenca de atracci\u00f3n del dedo de saffman-taylor disminuye r\u00e1pidamente con el contraste de viscosidades (c ), y es muy peque\u00f1a para c=0. El dedo de saffman-taylor no es el atractor gen\u00e9rico para c arbitrario. Se ha identificado las burbujas de taylor-saffman como una clase de atractores que compite con el dedo de saffman-taylor. la diferente topolog\u00eda de los dos atractores requieren la rotura de la interficie.  hemos derivado una ecuaci\u00f3n interfacial no local para una celda de hele shaw desordenada (en la altura del espaciado), como modelo de medio poroso. esta ecuaci\u00f3n incluye e<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Interface dynamics in two-dimensional viscous flows<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Interface dynamics in two-dimensional viscous flows <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Eduard Paun\u00e9 Xuriguera <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 15\/11\/2002<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Jaume Casademunt Viader<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: emilio Hern\u00e1ndez Garc\u00eda <\/li>\n<li>s. Siegel michael (vocal)<\/li>\n<li>rodolfo Cuerno rejado (vocal)<\/li>\n<li>alain Pumir (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Eduard Paun\u00e9 Xuriguera En esta tesis se han estudiado diversos aspectos de la din\u00e1mica interfacial en flujos [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[951,199,200,18041,202,201],"tags":[60957,60955,50696,20072,14549,60956],"class_list":["post-19944","post","type-post","status-publish","format-standard","hentry","category-barcelona","category-fisica","category-fisica-de-fluidos","category-flujos-de-fluidos","category-mecanica","category-mecanica-estadistica","tag-alain-pumir","tag-eduard-paune-xuriguera","tag-emilio-hernandez-garcia","tag-jaume-casademunt-viader","tag-rodolfo-cuerno-rejado","tag-s-siegel-michael"],"_links":{"self":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/19944","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/comments?post=19944"}],"version-history":[{"count":0,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/19944\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/media?parent=19944"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/categories?post=19944"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/tags?post=19944"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}