Catálogo de publicaciones - tesis

Compartir en
redes sociales

Título de Acceso Abierto

Enlarging time-steps for solving one and two phase flows using the particle finite element method

Juan Marcelo Gimenez Norberto Marcelo Nigro Rainald Löhner Gustavo Buscaglia Mario Storti

acceptedVersion.

Resumen/Descripción – provisto por el repositorio digital
The development of numerical methods for one-phase flows have undergone a tremendous progress and impressive results. The case of multi-phase flows is a field placed far from being completely understood and the available numerical tools are still in a developing stage. An additional issue of current numerical strategies is the considerable computational effort required to solve problems where complex geometries are present requiring high level of detail and large simulation times. In this context, the current thesis presents a highly efficient numerical tool to solve one- and two-phase flows called Particle Finite Element Method Two (PFEM-2). This method presents a hybrid spatial discretization, which uses Lagrangian particles and Eulerian mesh, for the numerical solution of the transport equations written in Lagrangian formulation. The improved methodology includes a novel strategy of explicit integration of particles trajectories following the streamlines, which gives it the capability of using large time-steps without significant accuracy loss. The body of this thesis presents a high performing implementation, able to be executed over scientific clusters, and the extension of PFEM-2 to solve two-phase flows considering the treatment of discontinuities at the interfaces and surface tension without loosing the feature of employing large time-steps. Also, new strategies of projection from particles to mesh, mathematical formulation of integration errors, solution of complex academical and industrial problems, among other novel topics treated, gives a robust frame of analysis for PFEM-2 and positioning it among the fastest methods to solve incompressible flows.
Palabras clave – provistas por el repositorio digital

PFEM-2; Computational fluid dynamics; Numerical simulation; Particle methods2002; Multiphase flows; High performance computing; Fluidodinámica computacional; Simulación numérica; Métodos de partículas; Flujos multifásicos; Cómputo de alto rendimiento

Disponibilidad
Institución detectada Año de publicación Navegá Descargá Solicitá
No requiere 2015 Biblioteca Virtual de la Universidad Nacional del Litoral (SNRD) acceso abierto

Información

Tipo de recurso:

tesis

Idiomas de la publicación

  • inglés

País de edición

Argentina

Fecha de publicación