An Isogeometric Boundary Element Method for 3D lifting flows using T-splines

S.P. Chouliaras, P.D. Kaklis, K.V. Kostas, A.I. Ginnis, C.G. Politis

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

In this paper an Isogeometric Boundary Element Method for three-dimensional lifting flows based on Morino’s (Morino and Kuo, 1974) formulation is presented. Analysis-suitable T-splines are used for the representation of all boundary surfaces and the unknown perturbation potential is approximated by the same T-spline basis used for the geometry. A novel numerical application of the so-called Kutta condition is introduced that utilises the advantages of isogeometric analysis with regard to the smoothness of the trailing edge curve basis functions. The method shows good agreement with existing experimental results and superior behaviour when compared to a low order panel method. The effect of the tip singularity on Kutta condition is also investigated for different levels of refinement and positions of the trailing edge collocation points.
Original languageEnglish
Article number113556
Number of pages20
JournalComputer Methods in Applied Mechanics end Engineering
Volume373
Early online date20 Nov 2020
DOIs
Publication statusPublished - 1 Jan 2021

Keywords

  • isogeometric analysis
  • BEM
  • T-splines
  • lifting flows

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