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== Abstract ==
 
== Abstract ==
  
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En este trabajo proponemos el análisis de chimeneas utilizando interacción fluido-estructura como alternativa a los clásicos procedimientos internacionales bien reglamentados por diferentes países. Para lograr un análisis confiable, se ha implementado un fluido incompresible estabilizado del tipo ALE para el estudio del viento, el cual ha sido acoplado a una chimenea que se estudia con elementos lámina del tipo BST. Este tipo de elemento tiene la característica de no poseer grados de libertad de rotación, lo cual al tratarse de un elemento no-lineal geométrico permite su análisis con menos grados de libertad influyendo directamente en la velocidad del cálculo. Para el acoplamiento se ha utilizado un método fuerte con relajación de Aitken. Un estudio detallado sobre la teoría e implementación de cada una de las partes involucradas en el problema de interacción fluido-estructura se encuentra en [1]. Se presenta el particular el estudio de una chimenea de acero construida recientemente, donde se presentan diferencias entre un método clásico y el método aquí presentado usando interacción fluuido-estructura. Summary As alternative to methods presented in several codes around the world to analyze chimneys, an analysis procedure based in the finite element method is presented. To achieve a reliable analysis, a stabilized incompressible fluid with an ALE scheme is used to simulate wind action. Geometrically nonlinear BST rotation-free shell elements are used to model a steel chimney and both schemes are coupled to simulate the fluid-structure interaction of chimneys. Shell elements without rotation degrees improve time solution due to a significant reduction of degrees of freedom in the geometrically nonlinear system. A strong coupling scheme with Aitken relaxation method is used to ensure convergence. Detailed theory for fluid, structure and interaction can be founded in [1]. Differences between code analysis and the proposed procedure are presented for a case of study.
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As alternative to methods presented in several codes around the world to analyze chimneys, an analysis procedure based in the finite element method is presented. To achieve a reliable analysis, a stabilized incompressible fluid with an ALE scheme is used to simulate wind action. Geometrically nonlinear BST rotation-free shell elements are used to model a steel chimney and both schemes are coupled to simulate the fluid-structure interaction of chimneys. Shell elements without rotation degrees improve time solution due to a significant reduction of degrees of freedom in the geometrically nonlinear system. A strong coupling scheme with Aitken relaxation method is used to ensure convergence. Detailed theory for fluid, structure and interaction can be founded in [1]. Differences between code analysis and the proposed procedure are presented for a case of study.
  
 
== Full document ==
 
== Full document ==
 
<pdf>Media:draft_Content_296288891RR263J.pdf</pdf>
 
<pdf>Media:draft_Content_296288891RR263J.pdf</pdf>

Latest revision as of 10:55, 14 June 2017

Abstract

As alternative to methods presented in several codes around the world to analyze chimneys, an analysis procedure based in the finite element method is presented. To achieve a reliable analysis, a stabilized incompressible fluid with an ALE scheme is used to simulate wind action. Geometrically nonlinear BST rotation-free shell elements are used to model a steel chimney and both schemes are coupled to simulate the fluid-structure interaction of chimneys. Shell elements without rotation degrees improve time solution due to a significant reduction of degrees of freedom in the geometrically nonlinear system. A strong coupling scheme with Aitken relaxation method is used to ensure convergence. Detailed theory for fluid, structure and interaction can be founded in [1]. Differences between code analysis and the proposed procedure are presented for a case of study.

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Published on 01/07/10
Accepted on 01/07/10
Submitted on 01/07/10

Volume 26, Issue 3, 2010
Licence: CC BY-NC-SA license

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