An isogeometric BEM for exterior potential-flow problems around lifting bodies

C.G Politis; A.  Papagiannopoulos; K.A. Belibassakis; P. D. Kaklis; K.V. Kostas; A. I. Ginnis; T. P. Gerostathis

An isogeometric BEM for exterior potential-flow problems around lifting bodies

C.G Politis, A. Papagiannopoulos, K.A. Belibassakis, P. D. Kaklis, K.V. Kostas, A. I. Ginnis, T. P. Gerostathis

Naval Architecture, Ocean And Marine Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

7 Citations (Scopus)

156 Downloads (Pure)

Abstract

In this paper, the Isogeometric Analysis (IGA) concept is combined with the Boundary Element Method (BEM) for solving the exterior Neumann problem associated with the steady lifting flow around a hydrofoil. The formulation of the problem is based on a Boundary Integral Equation for the associated velocity potential combined with the null-pressure jump Kutta condition at the trailing edge. The developed Isogeometric-BEM is based on a parametric NURBS representation of the hydrofoil and employs the very same basis for representing the velocity potential. The Boundary Integral Equation is numerically solved by collocating at the Greville abscissas of the knot vector of the hydrofoil's parametric representation. Numerical error analysis of the Isogeometric-BEM using h-renement is performed and compared with classical low-order panel methods.

Original language	English
Title of host publication	11th World Congress on Computational Mechanics (WCCM XI)
Subtitle of host publication	5th European Conference on Computational Mechanics (ECCM V) -- 6th European Conference on Computational Fluid Dynamics (ECFD VI)
Editors	E. Onate, J. Oliver, A. Huerta
Place of Publication	Barcelona, Spain
Pages	2433-2444
Number of pages	12
Volume	III
Publication status	Published - Jul 2014

Keywords

isogeometric analysis
NURBS
potential flows
lifting flows

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Politis-etal-WCCM2014-isogeometric-BEM-potential-flow-lifting-bodiesAccepted author manuscript, 377 KB

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Politis, C. G., Papagiannopoulos, A., Belibassakis, K. A., Kaklis, P. D., Kostas, K. V., Ginnis, A. I., & Gerostathis, T. P. (2014). An isogeometric BEM for exterior potential-flow problems around lifting bodies. In E. Onate, J. Oliver, & A. Huerta (Eds.), 11th World Congress on Computational Mechanics (WCCM XI) : 5th European Conference on Computational Mechanics (ECCM V) -- 6th European Conference on Computational Fluid Dynamics (ECFD VI) (Vol. III, pp. 2433-2444).

Politis, C.G ; Papagiannopoulos, A. ; Belibassakis, K.A. et al. / An isogeometric BEM for exterior potential-flow problems around lifting bodies. 11th World Congress on Computational Mechanics (WCCM XI) : 5th European Conference on Computational Mechanics (ECCM V) -- 6th European Conference on Computational Fluid Dynamics (ECFD VI). editor / E. Onate ; J. Oliver ; A. Huerta. Vol. III Barcelona, Spain, 2014. pp. 2433-2444

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title = "An isogeometric BEM for exterior potential-flow problems around lifting bodies",

abstract = "In this paper, the Isogeometric Analysis (IGA) concept is combined with the Boundary Element Method (BEM) for solving the exterior Neumann problem associated with the steady lifting flow around a hydrofoil. The formulation of the problem is based on a Boundary Integral Equation for the associated velocity potential combined with the null-pressure jump Kutta condition at the trailing edge. The developed Isogeometric-BEM is based on a parametric NURBS representation of the hydrofoil and employs the very same basis for representing the velocity potential. The Boundary Integral Equation is numerically solved by collocating at the Greville abscissas of the knot vector of the hydrofoil's parametric representation. Numerical error analysis of the Isogeometric-BEM using h-renement is performed and compared with classical low-order panel methods.",

keywords = "isogeometric analysis, NURBS, potential flows, lifting flows",

author = "C.G Politis and A. Papagiannopoulos and K.A. Belibassakis and Kaklis, {P. D.} and K.V. Kostas and Ginnis, {A. I.} and Gerostathis, {T. P.}",

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month = jul,

language = "English",

isbn = "9788494284472",

volume = "III",

pages = "2433--2444",

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booktitle = "11th World Congress on Computational Mechanics (WCCM XI)",

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Politis, CG, Papagiannopoulos, A, Belibassakis, KA, Kaklis, PD, Kostas, KV, Ginnis, AI & Gerostathis, TP 2014, An isogeometric BEM for exterior potential-flow problems around lifting bodies. in E Onate, J Oliver & A Huerta (eds), 11th World Congress on Computational Mechanics (WCCM XI) : 5th European Conference on Computational Mechanics (ECCM V) -- 6th European Conference on Computational Fluid Dynamics (ECFD VI). vol. III, Barcelona, Spain, pp. 2433-2444.

An isogeometric BEM for exterior potential-flow problems around lifting bodies. / Politis, C.G; Papagiannopoulos, A. ; Belibassakis, K.A. et al.
11th World Congress on Computational Mechanics (WCCM XI) : 5th European Conference on Computational Mechanics (ECCM V) -- 6th European Conference on Computational Fluid Dynamics (ECFD VI). ed. / E. Onate; J. Oliver; A. Huerta. Vol. III Barcelona, Spain, 2014. p. 2433-2444.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

TY - GEN

T1 - An isogeometric BEM for exterior potential-flow problems around lifting bodies

AU - Politis, C.G

AU - Papagiannopoulos, A.

AU - Belibassakis, K.A.

AU - Kaklis, P. D.

AU - Kostas, K.V.

AU - Ginnis, A. I.

AU - Gerostathis, T. P.

PY - 2014/7

Y1 - 2014/7

N2 - In this paper, the Isogeometric Analysis (IGA) concept is combined with the Boundary Element Method (BEM) for solving the exterior Neumann problem associated with the steady lifting flow around a hydrofoil. The formulation of the problem is based on a Boundary Integral Equation for the associated velocity potential combined with the null-pressure jump Kutta condition at the trailing edge. The developed Isogeometric-BEM is based on a parametric NURBS representation of the hydrofoil and employs the very same basis for representing the velocity potential. The Boundary Integral Equation is numerically solved by collocating at the Greville abscissas of the knot vector of the hydrofoil's parametric representation. Numerical error analysis of the Isogeometric-BEM using h-renement is performed and compared with classical low-order panel methods.

AB - In this paper, the Isogeometric Analysis (IGA) concept is combined with the Boundary Element Method (BEM) for solving the exterior Neumann problem associated with the steady lifting flow around a hydrofoil. The formulation of the problem is based on a Boundary Integral Equation for the associated velocity potential combined with the null-pressure jump Kutta condition at the trailing edge. The developed Isogeometric-BEM is based on a parametric NURBS representation of the hydrofoil and employs the very same basis for representing the velocity potential. The Boundary Integral Equation is numerically solved by collocating at the Greville abscissas of the knot vector of the hydrofoil's parametric representation. Numerical error analysis of the Isogeometric-BEM using h-renement is performed and compared with classical low-order panel methods.

KW - isogeometric analysis

KW - NURBS

KW - potential flows

KW - lifting flows

UR - http://www.wccm-eccm-ecfd2014.org/frontal/Ebook.asp

M3 - Conference contribution book

SN - 9788494284472

VL - III

SP - 2433

EP - 2444

BT - 11th World Congress on Computational Mechanics (WCCM XI)

A2 - Onate, E.

A2 - Oliver, J.

A2 - Huerta, A.

CY - Barcelona, Spain

ER -

Politis CG, Papagiannopoulos A, Belibassakis KA, Kaklis PD, Kostas KV, Ginnis AI et al. An isogeometric BEM for exterior potential-flow problems around lifting bodies. In Onate E, Oliver J, Huerta A, editors, 11th World Congress on Computational Mechanics (WCCM XI) : 5th European Conference on Computational Mechanics (ECCM V) -- 6th European Conference on Computational Fluid Dynamics (ECFD VI). Vol. III. Barcelona, Spain. 2014. p. 2433-2444

An isogeometric BEM for exterior potential-flow problems around lifting bodies

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