SPH no-slip BC implementation analysis at the continous level

Souto Iglesias, Antonio and González Gutierrez, Leo Miguel and Colagrossi, A. and Antuono, Matteo (2010). SPH no-slip BC implementation analysis at the continous level. In: "5th International SPHERIC SPH Workshop, 2010", 23/06/2010 - 25/06/2010, Manchester, UK. pp. 1-8.

Description

Title: SPH no-slip BC implementation analysis at the continous level
Author/s:
  • Souto Iglesias, Antonio
  • González Gutierrez, Leo Miguel
  • Colagrossi, A.
  • Antuono, Matteo
Item Type: Presentation at Congress or Conference (Article)
Event Title: 5th International SPHERIC SPH Workshop, 2010
Event Dates: 23/06/2010 - 25/06/2010
Event Location: Manchester, UK
Title of Book: Proceedings of the 5th International SPHERIC SPH Workshop, 2010
Date: 2010
Subjects:
Faculty: E.T.S.I. Navales (UPM)
Department: Enseñanzas Básicas de la Ingeniería Naval [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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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.

More information

Item ID: 6774
DC Identifier: http://oa.upm.es/6774/
OAI Identifier: oai:oa.upm.es:6774
Official URL: http://www.mace.manchester.ac.uk/5thspheric/
Deposited by: Memoria Investigacion
Deposited on: 29 Apr 2011 11:24
Last Modified: 20 Apr 2016 15:56
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