A boundary integral equation method for oblique water-wave scattering by cylinders governed by the modified Helmholtz equation

dc.contributor.author	Πολίτης, Κωνσταντίνος	el
dc.contributor.author	Παπαλεξανδρής, Μιλτιάδης	el
dc.contributor.author	Αθανασούλης, Γεράσιμος Α.	el
dc.date.accessioned	2015-06-02T19:47:15Z
dc.date.available	2015-06-02T19:47:15Z
dc.date.issued	2015-06-02
dc.identifier.uri	http://hdl.handle.net/11400/14896
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/us/	*
dc.source	http://www.scopus.com/record/display.url?eid=2-s2.0-0036705434&origin=resultslist&sort=plf-f&src=s&sid=7F04C384A08FCCC9964A7BA0BE6ED47D.ZmAySxCHIBxxTXbnsoe5w%3a20&sot=autdocs&sdt=autdocs&sl=17&s=AU-ID%287005376667%29&relpos=12&relpos=12&citeCnt=8&searchTerm=	en
dc.subject	αλγόριθμοι
dc.subject	Προβλήματα συνοριακών τιμών
dc.subject	Βαθμοί ελευθερίας
dc.subject	Περίθλαση
dc.subject	Ολοκληρωτικές εξισώσεις
dc.subject	Algorithms
dc.subject	Boundary value problems
dc.subject	Degrees of freedom
dc.subject	Diffraction
dc.subject	Integral equations
dc.title	A boundary integral equation method for oblique water-wave scattering by cylinders governed by the modified Helmholtz equation	en
heal.type	journalArticle
heal.classification	Ναυτική τέχνη και επιστήμη
heal.classification	Ναυτική μηχανολογία
heal.classification	Naval art and science
heal.classification	Marine engineering
heal.classificationURI	N/A-Ναυτική τέχνη και επιστήμη
heal.classificationURI	N/A-Ναυτική μηχανολογία
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh85090357
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh85081157
heal.keywordURI	http://id.loc.gov/authorities/subjects/sh85016102
heal.keywordURI	http://id.loc.gov/authorities/subjects/sh85037928
heal.identifier.secondary	DOI: 10.1016/S0141-1187(02)00047-0
heal.language	en
heal.access	campus
heal.recordProvider	Τεχνολογικό Εκπαιδευτικό Ίδρυμα Αθήνας. Σχολή Τεχνολογικών Εφαρμογών. Τμήμα Ναυπηγών Μηχανικών Τ.Ε.	el
heal.publicationDate	2002-08
heal.bibliographicCitation	Politis, C.G., Papalexandris, M.V. and Athanassoulis, G.A. (2002) A boundary integral equation method for oblique water-wave scattering by cylinders governed by the modified Helmholtz equation. Applied Ocean Research. [Online] 24, (4), pp.215-233. Available from: http://www.scopus.com [Accessed 02/06/2015]	en
heal.abstract	In this work we are concerned with the interaction of a train of regular deep-water waves with an infinitely long, surface-piercing or submerged cylinder of arbitrary shape (diffraction problem). We are also concerned with the complementary problem of fluid motion induced by the forced oscillations of the cylinder in each of its degrees of freedom: heave, sway, and roll (generalized radiation problem). The amplitude of the oscillation is assumed to vary sinusoidally along the cylinder axis. The problem is solved via the Boundary Integral Equation method by using an appropriate Green function and Green's second identity. According to this method, the initial boundary value problem is formulated as a Fredholm integral equation of the second kind posed on the body boundary. The efficiency of the method depends on the accuracy with which the numerical evaluation of the Green function is performed. For this purpose we employ two alternative representations of the Green function, in conjunction with fast and accurate algorithms for the numerical integration of highly oscillatory functions. Numerical results are presented for a floating semi-circle, a floating inverse T , a submerged circle, and a submerged rectangular cylinder. The efficiency and accuracy of the proposed algorithm is tested with existing results, as well as results for the limiting case of the Laplace equation for which much information is available.	en
heal.publisher	Elsevier	en
heal.journalName	Applied Ocean Research	en
heal.journalType	peer-reviewed
heal.fullTextAvailability	true