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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.
Title: | SPH no-slip BC implementation analysis at the continous level |
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Author/s: |
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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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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.
Item ID: | 6774 |
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DC Identifier: | https://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 |