Memorias de investigación
Ponencias en congresos:
SPH no-slip BC implementation analysis at the continous level
Año:2010
Áreas de investigación
  • Ingeniería mecánica, aeronaútica y naval
Datos
Descripción
The aim of this paper is to discuss whether there are structural problems in three of the most representative velocity mirroring techniques used to force no-slip boundary conditions (BC) in SPH for Newtonian incompressible flows. We refer specifically to fixed fluid particles, ghost particles, and Takeda et al. [1] boundary integrals. In Newtonian incompressible flows, the viscous related terms in the momentum conservation equation depend on the evaluation of the Laplacian of the velocity field. In order to analyze such techniques, the continuous version of the Laplacian approximation by Morris et al. [2] and Monaghan- Cleary-Gingold [3] viscous terms has been considered. It has been shown that there are intrinsic inaccuracies in the computation of the Laplacian close to the boundaries and the onset of singularities in such evaluation for some flows and mirroring techniques combinations. The impact of these deviations in the SPH simulation of viscous flows is not clear at this stage.
Internacional
Si
Nombre congreso
Tipo de participación
960
Lugar del congreso
Manchester
Revisores
Si
ISBN o ISSN
0000000000000
DOI
Fecha inicio congreso
23/06/2010
Fecha fin congreso
25/06/2010
Desde la página
1
Hasta la página
8
Título de las actas
Proceedings of the 5th SHERIC workshop
Esta actividad pertenece a memorias de investigación
Participantes
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: CEHINAV (Canal de Ensayos Hidrodinámicos de la E.T.S.I. Navales)
  • Departamento: Enseñanzas Básicas de la Ingeniería Naval