{"id":83581,"date":"2018-03-10T00:07:43","date_gmt":"2018-03-10T00:07:43","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/simulacion-numerica-de-inestabilidades-en-interfases-la%c2%adquido-gas\/"},"modified":"2018-03-10T00:07:43","modified_gmt":"2018-03-10T00:07:43","slug":"simulacion-numerica-de-inestabilidades-en-interfases-la%c2%adquido-gas","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-tecnologicas\/simulacion-numerica-de-inestabilidades-en-interfases-la%c2%adquido-gas\/","title":{"rendered":"Simulaci\u00f3n num\u00e9rica de inestabilidades en interfases l\u00edquido-gas"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Enrique L\u00f3pez Pages <\/strong><\/h2>\n<p>En esta tesis se estudia el inicio y desarrollo de inestabilidad en las superficies de separaci\u00f3n (interfase) entre dos corrientes, de un l\u00edquido y un gas, aguas debajo de placas separadas con bordes de salida de espesor nulo y finito. Se analizan sucesivamente las capas de mezcla entre dos flujos de l\u00edquido y gas, as\u00ed como una l\u00e1mina delgada de l\u00edquido inyectada entre dos conflujos de de gas. No se imponen perturbaciones iniciales y las inestabilidades se desarrollan de forma natural en los sistemas, dependiendo de las caracter\u00edsticas geom\u00e9tricas y de los par\u00e1metros del flujo. Se deducen las ecuaciones correctamente adimensionalizadas y lo par\u00e1metros adimensionales esenciales.  en la soluci\u00f3n num\u00e9rica de las ecuaciones del movimiento se emplean la t\u00e9cnica de vol\u00famenes finitos y el c\u00f3digo comercial phoenics, poniendo especial \u00e9nfasis en el uso de esquemas de alto orden para la discretizaci\u00f3n de los t\u00e9rminos convectivo y temporal. En todos los casos estudiados se resuelven las ecuaciones de navier-stokes y la ecuaci\u00f3n de continuidad bidemensionales para ambas fases fluidas que se consideran incompresibles. las ecuaciones para las dos fases est\u00e1n acopladas a trav\u00e9s de las condiciones de contorno cinem\u00e1ticas y de equilibrio de esfuerzos tangenciales y normales en la interfase. Para el estudio de flujos bif\u00e1sicos se a\u00f1ade al c\u00f3digo el m\u00e9todo conocido como volumen of fluido (vof), el m\u00e9todo llamado continuum surface force, y t\u00e9cnicas de direcciones alternadas en la integraci\u00f3n temporal.  se estudia el comportamiento de la interfase l\u00edquido-gas en una capa de cortadura detr\u00e1s de una placa s\u00f3lida de espesor no despreciable, para diferentes n\u00fameros de reynolds del flujo gaseoso y aplicando la condici\u00f3n de deslizamiento de navier a la l\u00ednea de contacto. Los resultados muestran la formaci\u00f3n de estructuras de v\u00f3rtices en la estela cercana y la relaci\u00f3n directa entre las fluctuaciones de presi\u00f3n inducidas por es<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Simulaci\u00f3n num\u00e9rica de inestabilidades en interfases l\u00edquido-gas<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Simulaci\u00f3n num\u00e9rica de inestabilidades en interfases l\u00edquido-gas <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Enrique L\u00f3pez Pages <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Zaragoza<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 28\/02\/2000<\/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>Cesar Dopazo Garcia<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Antonio Castellanos mata <\/li>\n<li> Higuera anton Francisco Jos\u00e9 (vocal)<\/li>\n<li>stephane Zaleski (vocal)<\/li>\n<li>Antonio Lozano fantoba (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Enrique L\u00f3pez Pages En esta tesis se estudia el inicio y desarrollo de inestabilidad en las superficies [&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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