Acceleration of a navier-stokes equation solver for unstructured grids using agglomeration multigrid and parallel processing

dc.contributor.author	Λαμπρόπουλος, Ν.Κ.	el
dc.contributor.author	Κουμπογιάννης, Δημήτριος Γ.	el
dc.contributor.author	Γιαννάκογλου, Κυριάκος Χ.	el
dc.date.accessioned	2015-06-07T20:33:10Z
dc.date.available	2015-06-07T20:33:10Z
dc.date.issued	2015-06-07
dc.identifier.uri	http://hdl.handle.net/11400/15549
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/us/	*
dc.source	http://www.scopus.com/record/display.url?origin=recordpage&eid=2-s2.0-1442338588&citeCnt=19&noHighlight=false&sort=plf-f&src=s&sid=62A9054A815E25F2D3896574D4CE2724.fM4vPBipdL1BpirDq5Cw%3a10650&sot=autdocs&sdt=autdocs&sl=17&s=AU-ID%286507485349%29&relpos=3	en
dc.subject	Αλγόριθμοι
dc.subject	Μέθοδος των πεπερασμένων όγκων
dc.subject	Μαθηματικά μοντέλα
dc.subject	Συστήματα Παράλληλης Επεξεργασίας
dc.subject	τυρβώδης ροή
dc.subject	Algorithms
dc.subject	Finite volume method
dc.subject	Mathematical models
dc.subject	Parallel processing systems
dc.subject	turbulent flow
dc.title	Acceleration of a navier-stokes equation solver for unstructured grids using agglomeration multigrid and parallel processing	en
heal.type	journalArticle
heal.classification	Μηχανική
heal.classification	Μαθηματικά
heal.classification	Engineering
heal.classification	Mathematics
heal.classificationURI	N/A-Μηχανική
heal.classificationURI	N/A-Μαθηματικά
heal.classificationURI	http://skos.um.es/unescothes/C01363
heal.classificationURI	http://skos.um.es/unescothes/C02437
heal.keywordURI	http://id.loc.gov/authorities/subjects/sh95001595
heal.keywordURI	http://lod.nal.usda.gov/40640
heal.identifier.secondary	DOI: 10.1016/j.cma.2003.11.005
heal.language	en
heal.access	campus
heal.recordProvider	Τεχνολογικό Εκπαιδευτικό Ίδρυμα Αθήνας. Σχολή Τεχνολογικών Εφαρμογών. Τμήμα Μηχανικών Ενεργειακής Τεχνολογίας Τ.Ε.	el
heal.publicationDate	2007-03-05
heal.bibliographicCitation	Lambropoulos, N.K., Koubogiannis, D.G. and Giannakoglou, K.C. (2004) Acceleration of a Navier-Stokes equation solver for unstructured grids using agglomeration multigrid and parallel processing. Computer Methods in Applied Mechanics and Engineering. [Online] 193 (9-11). pp.781-803. Available from: http://www.scopus.com [Accessed 07/06/2015]	en
heal.abstract	This paper focuses on the parallelization of the agglomeration multigrid technique for the numerical solution of the 2D and 3D Favre-averaged Navier-Stokes equations on unstructured grids. The agglomeration algorithm conforms with the finite-volume discretization scheme and operates independently of the algorithm used to define the concurrently treated subdomains. The computational platform is a cluster of interconnected processors, each of which is associated with one subdomain and requires repetitive communication with the other processors, carried out through the PVM library. Emphasis is laid on (a) the agglomeration strategy, by comparing isotropic and directional agglomeration techniques depending on grid stretching, (b) the discretization schemes for the inviscid fluxes, based on identical edge-wise computations at any multigrid level along with flux limiting techniques, (c) the discretization schemes for the viscous fluxes, for which the triangle- or tetrahedron-based scheme on the fine mesh switches to a computationally less demanding edge-wise scheme on the coarser grids and (d) the modification to the multigrid operators for the one- and two-equation turbulence models. Isolated airfoil, wing and turbomachinery cascade flow problems are used to demonstrate the efficiency of multigrid.	en
heal.publisher	Elsevier	en
heal.journalName	Computer Methods in Applied Mechanics and Engineering	en
heal.journalType	peer-reviewed
heal.fullTextAvailability	true