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dc.contributor.authorGaggero, Stefano
dc.contributor.authorVilla, Diego
dc.contributor.authorTani, Giorgio
dc.contributor.authorViviani, Michele
dc.date.accessioned2020-10-30T16:37:36Z
dc.date.available2020-10-30T16:37:36Z
dc.date.created2015
dc.date.issued2017
dc.identifier.citationGaggero, S. [et al.]. Propeller nozzles design using viscous codes and optimization algorithms. A: MARINE VI. "MARINE VI : proceedings of the VI International Conference on Computational Methods in Marine Engineering". CIMNE, 2017, p. 234-255. ISBN 978-84-943928-6-3.
dc.identifier.isbn978-84-943928-6-3
dc.identifier.urihttp://hdl.handle.net/2117/331050
dc.description.abstractMarine propellers design requirements are always more pressing and the application of unusual propulsive configurations, like ducted propellers with decelerating nozzles, may represent a valuable alternative to fulfil stringent design constraints. If accelerating duct configurations were realized mainly to increase the propeller efficiency in highly-loaded conditions, decelerating nozzles sustains the postponing of the cavitating phenomena that reflects into reduction of vibrations and radiated noise. The design of decelerating nozzle, unfortunately, is still challenging. No extensive systematic series are available and the design relies on few measurements. On the other hand, viscous flow solvers appear as reliable and accurate tools for the prediction of complex flow fields. Hence, in the present paper the opportunity to use CFD as a part of a design procedure based on optimization, by combining a parametric description of the geometry, the OpenFOAM solver and a genetic type algorithm in the ModeFrontier environment, is investigated. Design improvements for both accelerating and decelerating ducts are measured by comparing the performance of the optimized geometries with those of conventional shapes available in literature.
dc.format.extent13 p.
dc.language.isoeng
dc.publisherCIMNE
dc.rightsOpen access
dc.subjectÀrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes en elements finits
dc.subject.lcshFinite element method
dc.subject.lcshMarine engineering
dc.subject.otherDucted Propellers, Accelerating Nozzles Design, Decelerating Nozzles Design, Optimization, OpenFOAM
dc.titlePropeller nozzles design using viscous codes and optimization algorithms
dc.typeConference report
dc.rights.accessOpen Access
local.citation.contributorMARINE VI
local.citation.publicationNameMARINE VI : proceedings of the VI International Conference on Computational Methods in Marine Engineering
local.citation.startingPage234
local.citation.endingPage255


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