{"id":74822,"date":"2018-03-09T23:19:56","date_gmt":"2018-03-09T23:19:56","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/difusion-y-propagacion-en-medios-fractales\/"},"modified":"2018-03-09T23:19:56","modified_gmt":"2018-03-09T23:19:56","slug":"difusion-y-propagacion-en-medios-fractales","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/fisica\/difusion-y-propagacion-en-medios-fractales\/","title":{"rendered":"Difusi\u00f3n y propagaci\u00f3n en medios fractales"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Daniel Campos Moreno <\/strong><\/h2>\n<p>En este trabajo se pretenden estudiar y modelizar las principales caracter\u00edsticas de los procesos de transporte a trav\u00e9s de medios fractales o autosimilares.  a pesar de ser unas estructuras muy diferentes entre si y aparentemente irregulares, los fractales poseen una serie de propiedades comunes, que se suelen caracterizar mediante leyes de escala, y que permiten plantear un modelo de transporte general.  nosotros, tras revisar los principales resultados que se conocen en el campo de la difusi\u00f3n en medios fractales, proponemos una ecuaci\u00f3n anal\u00edtica que es capaz de explicar la casi totalidad de estos resultados y que incluso predice algunos comportamientos no conocidos hasta la fecha. La validez de dicho modelo es comprobada mediante simulaciones de random-walk llevadas a cabo sobre estructuras fractales generadas por ordenador.  adem\u00e1s de procesos de difusi\u00f3n, el modelo que proponemos puede extenderse para considerar otros fen\u00f3menos de transporte m\u00e1s generales. En concreto, dedicamos una parte de trabajo al estudio de procesos de reacci\u00f3n-difusi\u00f3n en medios fractales y, puesto que estos modelos dan lugar a soluciones de tipo propagatorio, nos concentramos especialmente en determinar las velocidades de propagaci\u00f3n que predice el modelo para estos casos, comprobando de nuevos la validez de estos resultados mediante simulaciones.  la \u00faltima parte de la memoria se dedica al estudio de aplicaciones pr\u00e1cticas y comparaci\u00f3n con experimentos en los cuales los procesos de difusi\u00f3n o de propagaci\u00f3n a trav\u00e9s de medios autosimilares pueden tener especial relevancia. las aplicaciones concretas que analizamos son:  1,- la difusi\u00f3n de sustancias a trav\u00e9s de redes hidrogr\u00e1ficas.  2,- los procesos de migraciones biol\u00f3gicas a trav\u00e9s de redes fractales.  3,- los procesos de combusti\u00f3n e incendios forestales en distribuciones de combustible heterog\u00e9neas.  4,- la propagaci\u00f3n de frentes qu\u00edmicos en medios fractales.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Difusi\u00f3n y propagaci\u00f3n en medios fractales<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Difusi\u00f3n y propagaci\u00f3n en medios fractales <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Daniel Campos Moreno <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Aut\u00f3noma de barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 21\/06\/2005<\/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>Joaquim Fort Viader<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: jose Casas vazquez <\/li>\n<li>santos Bravo yuste (vocal)<\/li>\n<li>Carlos P\u00e9rez Garc\u00eda (vocal)<\/li>\n<li>vicen\u00ed\u00a7 M\u00e9ndez l\u00f3pez (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Daniel Campos Moreno En este trabajo se pretenden estudiar y modelizar las principales caracter\u00edsticas de los procesos [&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 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