The BEM as a tool for analysing unsteady propulsor motions, with applications to maneuvering propellers and biomimetic flows

Politis, GK

dc.contributor.author	Politis, GK	en
dc.date.accessioned	2014-03-01T02:53:29Z
dc.date.available	2014-03-01T02:53:29Z
dc.date.issued	2011	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/36356
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-84860236452&partnerID=40&md5=7ca80dfca100d3d789c4d3553a46ec3d	en
dc.subject	Biomimetic flows	en
dc.subject	Boundary element method	en
dc.subject	Maneuvering propellers	en
dc.subject	Unsteady propulsor hydrodynamics	en
dc.subject	Unsteady shear layer dynamics	en
dc.subject.other	Flapping foil	en
dc.subject.other	Free shear layer	en
dc.subject.other	Lifting bodies	en
dc.subject.other	Numerical aspects	en
dc.subject.other	Propulsors	en
dc.subject.other	Shear layer	en
dc.subject.other	Simplifying assumptions	en
dc.subject.other	Time stepping algorithms	en
dc.subject.other	Unsteady performance	en
dc.subject.other	Vortex sheet	en
dc.subject.other	Wake model	en
dc.subject.other	Biomimetics	en
dc.subject.other	Boundary element method	en
dc.subject.other	Computational methods	en
dc.subject.other	Marine engineering	en
dc.subject.other	Shear flow	en
dc.subject.other	Propellers	en
dc.title	The BEM as a tool for analysing unsteady propulsor motions, with applications to maneuvering propellers and biomimetic flows	en
heal.type	conferenceItem	en
heal.publicationDate	2011	en
heal.abstract	The aim of this paper is to show how an unsteady BEM time stepping algorithm can be used in predicting the unsteady performance of maneuvering propellers and biomimetic flows. The main innovation of the developed methodology is its capability to calculate the geometry of the free shear layers (vortex sheets), produced by the lifting bodies of the system, avoiding thus the use of any simplifying assumptions like that of a helicoidal or a generalized wake model. More specifically, after a brief presentation of the principal theoretical and numerical aspects of the developed methodology, we give a number of applications for the prediction of the developed unsteady forces and moments for a maneuvering propeller in selected operational regimes and a flapping foil system.	en
heal.journalName	MARINE 2011 - Computational Methods in Marine Engineering IV	en
dc.identifier.spage	511	en
dc.identifier.epage	527	en