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

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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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 languageEnglish
Title of host publication11th World Congress on Computational Mechanics (WCCM XI)
Subtitle of host publication5th European Conference on Computational Mechanics (ECCM V) -- 6th European Conference on Computational Fluid Dynamics (ECFD VI)
EditorsE. Onate, J. Oliver, A. Huerta
Place of PublicationBarcelona, Spain
Pages2433-2444
Number of pages12
VolumeIII
Publication statusPublished - Jul 2014

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Keywords

  • isogeometric analysis
  • NURBS
  • potential flows
  • lifting flows

Cite this

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). Barcelona, Spain.