An Isogeometric Boundary Element Method for 3D lifting flows using T-splines
Chouliaras S.P. Kaklis P.D. Kostas K.V. Ginnis A.I. Politis C.G.
1 January 2021Elsevier B.V.
Computer Methods in Applied Mechanics and Engineering
2021#373
In this paper an Isogeometric Boundary Element Method for three-dimensional lifting flows based on Morinos (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.
BEM , Isogeometric Analysis , Lifting flows , Potential flow , T-splines
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Department of Naval Architecture, Ocean and Marine Engineering, University of Strathclyde, United Kingdom
Department of Mechanical and Aerospace Engineering, Nazarbayev University, Nur-Sultan, Kazakhstan
School of Naval Architecture and Marine Engineering, National Technical University of Athens, Greece
Department of Naval Architecture, University of West Attica, Athens, Greece
Department of Naval Architecture
Department of Mechanical and Aerospace Engineering
School of Naval Architecture and Marine Engineering
Department of Naval Architecture
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