A positioning algorithm for SPH ghost particles in smoothly curved geometries

Vela Vela, Luis Ernesto; Reynolds Barredo, José Miguel; Sánchez Fernández, Luis Raúl

Publication:
A positioning algorithm for SPH ghost particles in smoothly curved geometries

dc.affiliation.dpto	UC3M. Departamento de Física	es
dc.affiliation.grupoinv	UC3M. Grupo de Investigación: Física de Plasmas	es
dc.contributor.author	Vela Vela, Luis Ernesto
dc.contributor.author	Reynolds Barredo, José Miguel
dc.contributor.author	Sánchez Fernández, Luis Raúl
dc.contributor.funder	Ministerio de Economía y Competitividad (España)	es
dc.date.accessioned	2022-09-19T07:53:58Z
dc.date.available	2022-09-19T07:53:58Z
dc.date.issued	2019-06
dc.description.abstract	An algorithm to place ghost particles across the domain boundary in the context of Smoothed Particle Hydrodynamics (SPH) is derived from basic principles, and constructed for several simple, three-dimensional, geometries. The performance of the algorithm is compared against the more commonly used ‘‘mirrored with respect to the local tangent plane" approach and shown to converge to it whenever the distance of the particles to the reflecting boundary is much smaller than a local measure of the surface’s curvature. The algorithm is demonstrated, tested and compared against the usual approach via simulations of a compressible flow around a cylinder, and the numerical cost of implementing it is addressed. We conclude that use of ghost particles to enforce boundary conditions is not only viable in the presence of smoothly curved boundaries, but more robust than the usual method for low-resolution scenarios.	en
dc.description.sponsorship	This research was sponsored in part by the DGICYT (Dirección General de Investigaciones Científicas y Tecnológicas) of Spain under National Project No. ENE2015-68265. Research was also funded in part by the Erasmus Mundus Program: International Doctoral College in Fusion Science and Engineering FUSION-DC, Spain.	en
dc.format.extent	13
dc.identifier.bibliographicCitation	Vela Vela, L., Reynolds-Barredo, J. M., & Sánchez, R. (2019). A positioning algorithm for SPH ghost particles in smoothly curved geometries. In Journal of Computational and Applied Mathematics, 353, 140–153	en
dc.identifier.doi	https://doi.org/10.1016/j.cam.2018.12.021
dc.identifier.issn	0377-0427
dc.identifier.publicationfirstpage	140
dc.identifier.publicationlastpage	153
dc.identifier.publicationtitle	JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS	en
dc.identifier.publicationvolume	353
dc.identifier.uri	https://hdl.handle.net/10016/35733
dc.identifier.uxxi	AR/0000023488
dc.language.iso	eng	en
dc.publisher	ELSEVIER BV	en
dc.relation.projectID	Gobierno de España. ENE2015-68265	es
dc.relation.publisherversion	https://www.sciencedirect.com/science/article/pii/S0377042718307520?via%3Dihub	en
dc.rights	© 2018 Elsevier B.V. All rights reserved.	en
dc.rights	Atribución-NoComercial-SinDerivadas 3.0 España	*
dc.rights.accessRights	open access	en
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/es/	*
dc.subject.eciencia	Física	es
dc.subject.other	Sph	en
dc.subject.other	Smoothed particle hydrodynamics	en
dc.subject.other	Ghost particles	en
dc.subject.other	Boundary conditions	en
dc.subject.other	Hydrodynamics	en
dc.subject.other	Flows	en
dc.title	A positioning algorithm for SPH ghost particles in smoothly curved geometries	en
dc.type	research article	*
dc.type.hasVersion	AM	*
dspace.entity.type	Publication