Catálogo de publicaciones - tesis
Título de Acceso Abierto
Fluid structure interaction using an arbitrary lagrangian eulerian formulation
Luciano Garelli Mario Alberto Storti Carlos Sacco Axel Larreteguy Marcela Cruchaga Rodrigo Rafael Paz
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Resumen/Descripción – provisto por el repositorio digital
Multidisciplinary and Multiphysics coupled problems represent nowadays a challenging field when studying even more complex phenomena that appear in nature and in new technologies (e.g. Magneto-Hydrodynamics, Micro-Electro-Mechanics, Thermo-Mechanics, Fluid-Structure Interaction, etc.). Particularly, when dealing with Fluid-Structure Interaction problems several questions arise, namely the coupling algorithm, the mesh moving strategy, the Galilean Invariance of the scheme, the compliance with the Discrete Geometric Conservation Law (DGCL), etc. Therefore, the aim of this thesis is the development and implementation of a coupling algorithm for existing modules or subsystems, in order to carry out FSI simulations with the focus on distributed memory parallel platforms. Regarding the coupling techniques, some results on the convergence of the strong coupling Gauss-Seidel iteration are presented. Also, the precision of different predictor schemes for the structural system and the influence of the partitioned coupling on stability are discussed. Another key point when solving FSI problems is the use of the Arbitrary Lagrangian Eulerian formulation (ALE), which allows the use of moving meshes. As the ALE contributions affect the advective terms, some modifications on the stabilizing and the shock-capturing terms, are needed. Also, the movements of the fluid mesh produces a volume change in time of the elements, which adds to the fluid formulation an extra conservation law to be satisfied. The law is known as the Discrete Geometric Conservation Law (DGCL). In this thesis a new and original methodology for developing DGCL compliant formulations based on an Averaged ALE Jacobians Formulation (AJF) is presented.Palabras clave – provistas por el repositorio digital
Fluid structure interaction; Arbitrary lagrangian eulerian formulation; Finite element; Geometric conservation law; Weak coupling; Interacción fluido estructura; Formulación lagrangiana euleriana arbitraria; Elementos finitos; Ley de conservación geométrica; Acoplamiento débil
Disponibilidad
| Institución detectada | Año de publicación | Navegá | Descargá | Solicitá |
|---|---|---|---|---|
| No requiere | 2012 | Biblioteca Virtual de la Universidad Nacional del Litoral (SNRD) |
|
Información
Tipo de recurso:
tesis
Idiomas de la publicación
- inglés
País de edición
Argentina
Fecha de publicación
2012-06-27
