A local grid refinement method for three-dimensional turbulent recirculating flows

Papadakis, G; Bergeles, G

dc.contributor.author	Papadakis, G	en
dc.contributor.author	Bergeles, G	en
dc.date.accessioned	2014-03-01T01:14:19Z
dc.date.available	2014-03-01T01:14:19Z
dc.date.issued	1999	en
dc.identifier.issn	0271-2091	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12991
dc.subject	Conjugate gradient method	en
dc.subject	Finite volumes	en
dc.subject	Incompressible recirculating flows	en
dc.subject	Local refinement	en
dc.subject	Staggered mesh	en
dc.subject.classification	Computer Science, Interdisciplinary Applications	en
dc.subject.classification	Mathematics, Interdisciplinary Applications	en
dc.subject.classification	Mechanics	en
dc.subject.classification	Physics, Fluids & Plasmas	en
dc.subject.other	SIMULATION	en
dc.subject.other	CUBE	en
dc.title	A local grid refinement method for three-dimensional turbulent recirculating flows	en
heal.type	journalArticle	en
heal.identifier.primary	10.1002/(SICI)1097-0363(19991215)31:7<1157::AID-FLD917>3.0.CO;2-V	en
heal.identifier.secondary	http://dx.doi.org/10.1002/(SICI)1097-0363(19991215)31:7<1157::AID-FLD917>3.0.CO;2-V	en
heal.language	English	en
heal.publicationDate	1999	en
heal.abstract	A local grid refinement method is presented and applied to a three-dimensional turbulent recirculating flow. It is based on the staggered grid arrangement. The computational domain is covered by block-structured subgrids of different refinement levels. The exchange of information between the subgrids is fully conservative and all grids are treated implicitly. This allows for a simultaneous solution of one variable in all grids. All variables are stored in one-dimensional arrays. The solver selected for the solution of the discretised finite difference equations is the preconditioned bi-conjugate gradient (Bi-CG) method. For the case examined (turbulent flow around a surface-mounted cube), it was found that the latter method converges faster than the line solver. The locally refined mesh improved the accuracy of the pressure distribution on cube faces compared with a coarse mesh and yielded the same results as a fine single mesh, with a 62% gain in computer time. Copyright (C) 1999 John Wiley & Sons, Ltd.	en
heal.publisher	JOHN WILEY & SONS LTD	en
heal.journalName	International Journal for Numerical Methods in Fluids	en
dc.identifier.doi	10.1002/(SICI)1097-0363(19991215)31:7<1157::AID-FLD917>3.0.CO;2-V	en
dc.identifier.isi	ISI:000083957600006	en
dc.identifier.volume	31	en
dc.identifier.issue	7	en
dc.identifier.spage	1157	en
dc.identifier.epage	1172	en