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Memorias de investigación
Communications at congresses:
SPH no-slip BC implementation analysis at the continous level
Year:2010
Research Areas
  • Mechanical aeronautics and naval engineering
Information
Abstract
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.
International
Si
Congress
960
Place
Manchester
Reviewers
Si
ISBN/ISSN
0000000000000
Start Date
23/06/2010
End Date
25/06/2010
From page
1
To page
8
Proceedings of the 5th SHERIC workshop
Participants
  • Autor: Antonio Souto Iglesias (UPM)
  • Autor: Leo Miguel Gonzalez Gutierrez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: CEHINAV (Canal de Ensayos Hidrodinámicos de la E.T.S.I. Navales)
  • Departamento: Enseñanzas Básicas de la Ingeniería Naval
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