2D LES of vortex shedding from a square cylinder

Bouris, D; Bergeles, G

dc.contributor.author	Bouris, D	en
dc.contributor.author	Bergeles, G	en
dc.date.accessioned	2014-03-01T01:14:17Z
dc.date.available	2014-03-01T01:14:17Z
dc.date.issued	1999	en
dc.identifier.issn	0167-6105	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12976
dc.subject	Large eddy simulation	en
dc.subject	Square cylinder	en
dc.subject	Turbulence	en
dc.subject	Vortex shedding	en
dc.subject.classification	Engineering, Civil	en
dc.subject.classification	Mechanics	en
dc.subject.other	Computational fluid dynamics	en
dc.subject.other	Computer simulation	en
dc.subject.other	Fluid structure interaction	en
dc.subject.other	Reynolds number	en
dc.subject.other	Two dimensional	en
dc.subject.other	Vortex shedding	en
dc.subject.other	Large eddy simulation	en
dc.subject.other	Square cylinder	en
dc.subject.other	Turbulent flow	en
dc.subject.other	cylinder	en
dc.subject.other	flow around object	en
dc.subject.other	large eddy simulation	en
dc.subject.other	turbulence	en
dc.subject.other	vortex shedding	en
dc.title	2D LES of vortex shedding from a square cylinder	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0167-6105(98)00200-1	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0167-6105(98)00200-1	en
heal.language	English	en
heal.publicationDate	1999	en
heal.abstract	In the high Reynolds number flow past a square cylinder, turbulent fluctuations are superimposed on the periodic vortex shedding motion making numerical calculation of the flow a difficult task. In the present work a two-dimensional large eddy simulation is performed with no-slip boundary conditions at the solid walls. A filtering procedure is introduced in frequency space to separate the periodic from the turbulent fluctuations and the kinetic energy of both is calculated along the centerline behind the rod. The drag coefficient, vortex shedding frequency and spacing of the vortices in the wake are also calculated and the results are validated against experimental measurements. It is found that the two-dimensional large eddy simulation using a fine grid resolution, especially in the near wall region, gives a good representation of the quasi-two-dimensional mechanisms of the flow since they are directly simulated instead of being modeled as with statistical turbulence models.In the high Reynolds number flow past a square cylinder, turbulent fluctuations are superimposed on the periodic vortex shedding motion making numerical calculation of the flow a difficult task. In the present work a two-dimensional large eddy simulation is performed with no-slip boundary conditions at the solid walls. A filtering procedure is introduced in frequency space to separate the periodic from the turbulent fluctuations and the kinetic energy of both is calculated along the centerline behind the rod. The drag coefficient, vortex shedding frequency and spacing of the vortices in the wake are also calculated and the results are validate against experimental measurements. It is found that the two-dimensional large eddy simulation using a fine grid resolution, especially in the near wall region, gives a good representation of the quasi-two-dimensional mechanisms of the flow since they are directly simulated instead of being modeled as with statistical turbulence models.	en
heal.publisher	Elsevier Science Publishers B.V., Amsterdam, Netherlands	en
heal.journalName	Journal of Wind Engineering and Industrial Aerodynamics	en
dc.identifier.doi	10.1016/S0167-6105(98)00200-1	en
dc.identifier.isi	ISI:000078220000002	en
dc.identifier.volume	80	en
dc.identifier.issue	1-2	en
dc.identifier.spage	31	en
dc.identifier.epage	46	en