Artificial compressibility 3-D Navier-Stokes solver for unsteady incompressible flows with hybrid grids

Vrahliotis, S; Pappou, T; Tsangaris, S

dc.contributor.author	Vrahliotis, S	en
dc.contributor.author	Pappou, T	en
dc.contributor.author	Tsangaris, S	en
dc.date.accessioned	2014-03-01T02:07:51Z
dc.date.available	2014-03-01T02:07:51Z
dc.date.issued	2012	en
dc.identifier.issn	19942060	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/29613
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-84862014772&partnerID=40&md5=0d47868a06558ec725bf118dbd3fd08e	en
dc.subject	Artificial compressibility	en
dc.subject	Hybrid mesh	en
dc.subject	Incompressible flow	en
dc.title	Artificial compressibility 3-D Navier-Stokes solver for unsteady incompressible flows with hybrid grids	en
heal.type	journalArticle	en
heal.publicationDate	2012	en
heal.abstract	An unsteady incompressible numerical method for the solution of Navier-Stokes equations is presented. The finite volume solver adopts the method of artificial compressibility, using an implicit dual time stepping scheme for time accuracy. The 2D solver operates on general hybrid meshes containing triangles and quadrilaterals, while the 3D solver operates on hybrid meshes containing tetrahedra, pyramids, prisms and hexahedra. The developed algorithms for spatial discretization and time integration are mesh transparent. An upwind spatial discretization scheme is used for the convective terms and a central scheme for the diffusive terms. Efficient calculation of flow fluxes is implemented in an edge-wise fashion. A new combined method for efficient and accurate evaluation of variable gradients is achieved by using an averaging technique and by avoiding multiple spatial integration of the same element of the mesh. The results obtained agree well with numerical solutions obtained by other researchers.	en
heal.journalName	Engineering Applications of Computational Fluid Mechanics	en
dc.identifier.volume	6	en
dc.identifier.issue	2	en
dc.identifier.spage	248	en
dc.identifier.epage	270	en