{"id":20937,"date":"2018-03-09T09:10:30","date_gmt":"2018-03-09T09:10:30","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/interaccion-entre-ondas-de-faraday-y-flujos-medios\/"},"modified":"2018-03-09T09:10:30","modified_gmt":"2018-03-09T09:10:30","slug":"interaccion-entre-ondas-de-faraday-y-flujos-medios","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/politecnica-de-madrid\/interaccion-entre-ondas-de-faraday-y-flujos-medios\/","title":{"rendered":"Interacci\u00f3n entre ondas de faraday y flujos medios"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Elena Beatriz Mart\u00edn  Ortega <\/strong><\/h2>\n<p>En este trabajo se analiza la evoluci\u00f3n d\u00e9bilmente no lineal de las ondas de faraday que aparecen en la superficie libre de un l\u00edquido sometido a vibraci\u00f3n vertical. En particular, se estudia el efecto del acoplamiento entre flujo medio que se desarrolla en el seno del fluido y estas ondas superficiales excitadas param\u00e9tricamente, obteni\u00e9ndose que el flujo medio es causante de las desestabilizaci\u00f3n de las mismas. Para ello se analiza una configuraci\u00f3n simplificada, bidimensional y peri\u00f3dica en sentido horizontal, como aproximaci\u00f3n de un dep\u00f3sito de secci\u00f3n recta anular, cuyo radio es mucho mayor que la anchura del dep\u00f3sito, y \u00e9sta mucho mayor que la altura del fluido en reposo. Dicha configuraci\u00f3n se somete a vibraci\u00f3n vertical y se estudia en el caso l\u00edmite de baja viscosidad, amplitud de vibraci\u00f3n peque\u00f1a y frecuencia de vibraci\u00f3n pr\u00f3xima al doble de una frecuencia propia.  un primer an\u00e1lisis lineal del estado de reposo del problema no forzado proporciona los dos tipos de modos del sistema:  1,- modos oscilatorios, llamado stambi\u00e9n no viscosos, que producen las ondas superficiales.  2,- modos no oscilatorios, o viscosos, que son los causantes de la aparici\u00f3n de un flujo medio no oscilatorio.  a continuaci\u00f3n, en el l\u00edmite d\u00e9bilmente no lineal, se deduce un sistema de ecuaciones que describe la evoluci\u00f3n conjunta de las ondas superficiales y del flujo medio en una escala de tiempo lenta en comparaci\u00f3n con la de vibraci\u00f3n del dep\u00f3sito. El par de ondas superficiales que se generan debido al forzamiento param\u00e9trico evolucionan de una onda de tipo \u00abstanding\u00bb de amplitud constante y con un desfase espacial que puede depender del tiempo y cuya evoluci\u00f3n depende del flujo medio no oscilatorio, que se genera a trav\u00e9s de la capa l\u00edmite viscosa oscilatoria del fondo del dep\u00f3sito.  por \u00faltimo, estas ecuaciones se integran num\u00e9ricamente obteni\u00e9ndose primero la soluci\u00f3n estacionaria m\u00e1s sencilla, que consis<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Interacci\u00f3n entre ondas de faraday y flujos medios<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Interacci\u00f3n entre ondas de faraday y flujos medios <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Elena Beatriz Mart\u00edn  Ortega <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Polit\u00e9cnica de Madrid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 19\/12\/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> Vega De Prada Jos\u00e9 Manuel<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal:  Higuera ant\u00f3n Francisco jos\u00e9 <\/li>\n<li>Francisco Marqu\u00e9s truyol (vocal)<\/li>\n<li> Mancebo cort\u00e9s Francisco Javier (vocal)<\/li>\n<li>edgar Knobloch (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Elena Beatriz Mart\u00edn Ortega En este trabajo se analiza la evoluci\u00f3n d\u00e9bilmente no lineal de las ondas [&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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