Assessment of turbulence modelling of density currents developing three dimensionally on a slope

Venetsanos, AG; Horsch, GM; Christodoulou, GC

dc.contributor.author	Venetsanos, AG	en
dc.contributor.author	Horsch, GM	en
dc.contributor.author	Christodoulou, GC	en
dc.date.accessioned	2014-03-01T01:54:23Z
dc.date.available	2014-03-01T01:54:23Z
dc.date.issued	2005	en
dc.identifier.issn	1061026X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/27369
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-26444556953&partnerID=40&md5=d3c3c8938d85eeb7c17a06279ae040cd	en
dc.subject.other	Boundary layers	en
dc.subject.other	Kinetic energy	en
dc.subject.other	Laminar flow	en
dc.subject.other	Mathematical models	en
dc.subject.other	Reynolds number	en
dc.subject.other	Turbulent flow	en
dc.subject.other	Richardson numbers	en
dc.subject.other	Turbulence modelling	en
dc.subject.other	Ocean currents	en
dc.subject.other	density current	en
dc.subject.other	flow modeling	en
dc.subject.other	laminar-turbulent transition	en
dc.subject.other	marine environment	en
dc.subject.other	turbulence	en
dc.title	Assessment of turbulence modelling of density currents developing three dimensionally on a slope	en
heal.type	journalArticle	en
heal.publicationDate	2005	en
heal.abstract	The performance of four turbulence models is assessed in predicting the lateral spreading of density currents on a slope. Model behavior is compared against two experiments at different initial Richardson numbers (Ri0 = 0.014 and 0.28). In case of the low Ri0, the models predict, a quasilinear lateral spreading; current width is underestimated close to the source and overestimated at larger distances. For the higher Ri0 the predicted width variation with axial distance departs from quasi-linearity, tending towards the experimental, but although acceptable agreement is found close to the source, lateral spreading is overestimated at larger distances. Only the Launder-Sharma model, predicts complete laminarization of the flow in both cases in contrast to the experimental behavior. © 2005 Old City Publishing, Inc.	en
heal.journalName	Journal of Marine Environmental Engineering	en
dc.identifier.volume	8	en
dc.identifier.issue	2	en
dc.identifier.spage	147	en
dc.identifier.epage	154	en