IGA-BEM for lifting flows

S. Chouliaras; P. Kaklis; C. G. Politis; A. Ginnis; K. V. Kostas

IGA-BEM for lifting flows

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

Naval Architecture, Ocean And Marine Engineering

Research output: Contribution to conference › Paper › peer-review

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Abstract

Combining Iso-Geometric analysis (IGA) with Boundary Element Methods (BEM) for inviscid lifting flows imposes a number of difficulties. Firstly, an IGABEM collocation scheme has to take into account the tangent-plane discontinuity occurring along the trailing edge (TE). More important, the scheme has to handle the non-linear Kutta condition, securing continuity of the normal velocity and pressure through the a-priori unknown wake, a force-free boundary surface emanating from TE.

In this presentation we shall review the status of our work towards developing a pair of IGABEM collocation schemes for computing steady lifting flows around 2D and 3D bodies , e.g., hydrofoils, marine propellers; [1,2]. In the latter case, the ansatz functions are inherited from T-spline representations which are free from singularities occurring, e.g., at the tip of a propeller blade, when NURBS are used.

REFERENCES
[1] Kostas, K.V., Ginnis, A.-A. I., Politis, C.G., Kaklis, P.D, “Shape-optimization of 2D hydrofoils using an Isogeometric BEM solver”, Computer-Aided Design, vol. 82, pp. 79-87, (2017).
[2] Chouliaras, S.P., Kaklis, P.D., Ginnis, A.-A.I., Kostas, K.V., Politis, C.G., “An IGA-BEM method for the open-water marine propeller flow problem”, International Conference on Isogeometric Analysis, Pavia (IT), 11-13 September 2017.

Original language	English
Pages	1-23
Number of pages	22
Publication status	Published - 27 Jul 2018
Event	13th World Congress in Computational Mechanics : Symposium to Honor Professor Thomas J.R. Hughes on his 75th Birthday [invitation only] - New York City, United States Duration: 27 Jul 2018 → 27 Jul 2018 Conference number: 101 http://www.wccm2018.org/T_100

Conference

Conference	13th World Congress in Computational Mechanics
Country/Territory	United States
City	New York City
Period	27/07/18 → 27/07/18
Internet address	http://www.wccm2018.org/T_100

Keywords

computational mechanics
fluid mechanics
propeller blades
propulsion

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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Kaklis-etal-WCCM-2018-IGA-BEM-for-lifting-flowsAccepted author manuscript, 1.25 MBLicence: CC BY-NC 4.0

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ARCADES: Algebraic Representations in Computer-Aided Design for complEx Shapes (H2020 MSCA - ETN)
Kaklis, P.
European Commission - Horizon 2020
1/01/16 → 31/12/19
Project: Research

Cite this

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title = "IGA-BEM for lifting flows",

abstract = "Combining Iso-Geometric analysis (IGA) with Boundary Element Methods (BEM) for inviscid lifting flows imposes a number of difficulties. Firstly, an IGABEM collocation scheme has to take into account the tangent-plane discontinuity occurring along the trailing edge (TE). More important, the scheme has to handle the non-linear Kutta condition, securing continuity of the normal velocity and pressure through the a-priori unknown wake, a force-free boundary surface emanating from TE. In this presentation we shall review the status of our work towards developing a pair of IGABEM collocation schemes for computing steady lifting flows around 2D and 3D bodies , e.g., hydrofoils, marine propellers; [1,2]. In the latter case, the ansatz functions are inherited from T-spline representations which are free from singularities occurring, e.g., at the tip of a propeller blade, when NURBS are used. REFERENCES[1] Kostas, K.V., Ginnis, A.-A. I., Politis, C.G., Kaklis, P.D, “Shape-optimization of 2D hydrofoils using an Isogeometric BEM solver”, Computer-Aided Design, vol. 82, pp. 79-87, (2017).[2] Chouliaras, S.P., Kaklis, P.D., Ginnis, A.-A.I., Kostas, K.V., Politis, C.G., “An IGA-BEM method for the open-water marine propeller flow problem”, International Conference on Isogeometric Analysis, Pavia (IT), 11-13 September 2017.",

keywords = "computational mechanics, fluid mechanics, propeller blades, propulsion",

author = "S. Chouliaras and P. Kaklis and Politis, {C. G.} and A. Ginnis and Kostas, {K. V.}",

year = "2018",

month = jul,

day = "27",

language = "English",

pages = "1--23",

note = "13th World Congress in Computational Mechanics : Symposium to Honor Professor Thomas J.R. Hughes on his 75th Birthday [invitation only] ; Conference date: 27-07-2018 Through 27-07-2018",

url = "http://www.wccm2018.org/T_100",

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TY - CONF

T1 - IGA-BEM for lifting flows

AU - Chouliaras, S.

AU - Kaklis, P.

AU - Politis, C. G.

AU - Ginnis, A.

AU - Kostas, K. V.

N1 - Conference code: 101

PY - 2018/7/27

Y1 - 2018/7/27

N2 - Combining Iso-Geometric analysis (IGA) with Boundary Element Methods (BEM) for inviscid lifting flows imposes a number of difficulties. Firstly, an IGABEM collocation scheme has to take into account the tangent-plane discontinuity occurring along the trailing edge (TE). More important, the scheme has to handle the non-linear Kutta condition, securing continuity of the normal velocity and pressure through the a-priori unknown wake, a force-free boundary surface emanating from TE. In this presentation we shall review the status of our work towards developing a pair of IGABEM collocation schemes for computing steady lifting flows around 2D and 3D bodies , e.g., hydrofoils, marine propellers; [1,2]. In the latter case, the ansatz functions are inherited from T-spline representations which are free from singularities occurring, e.g., at the tip of a propeller blade, when NURBS are used. REFERENCES[1] Kostas, K.V., Ginnis, A.-A. I., Politis, C.G., Kaklis, P.D, “Shape-optimization of 2D hydrofoils using an Isogeometric BEM solver”, Computer-Aided Design, vol. 82, pp. 79-87, (2017).[2] Chouliaras, S.P., Kaklis, P.D., Ginnis, A.-A.I., Kostas, K.V., Politis, C.G., “An IGA-BEM method for the open-water marine propeller flow problem”, International Conference on Isogeometric Analysis, Pavia (IT), 11-13 September 2017.

AB - Combining Iso-Geometric analysis (IGA) with Boundary Element Methods (BEM) for inviscid lifting flows imposes a number of difficulties. Firstly, an IGABEM collocation scheme has to take into account the tangent-plane discontinuity occurring along the trailing edge (TE). More important, the scheme has to handle the non-linear Kutta condition, securing continuity of the normal velocity and pressure through the a-priori unknown wake, a force-free boundary surface emanating from TE. In this presentation we shall review the status of our work towards developing a pair of IGABEM collocation schemes for computing steady lifting flows around 2D and 3D bodies , e.g., hydrofoils, marine propellers; [1,2]. In the latter case, the ansatz functions are inherited from T-spline representations which are free from singularities occurring, e.g., at the tip of a propeller blade, when NURBS are used. REFERENCES[1] Kostas, K.V., Ginnis, A.-A. I., Politis, C.G., Kaklis, P.D, “Shape-optimization of 2D hydrofoils using an Isogeometric BEM solver”, Computer-Aided Design, vol. 82, pp. 79-87, (2017).[2] Chouliaras, S.P., Kaklis, P.D., Ginnis, A.-A.I., Kostas, K.V., Politis, C.G., “An IGA-BEM method for the open-water marine propeller flow problem”, International Conference on Isogeometric Analysis, Pavia (IT), 11-13 September 2017.

KW - computational mechanics

KW - fluid mechanics

KW - propeller blades

KW - propulsion

M3 - Paper

SP - 1

EP - 23

T2 - 13th World Congress in Computational Mechanics

Y2 - 27 July 2018 through 27 July 2018

ER -

IGA-BEM for lifting flows

Abstract

Conference

Keywords

UN SDGs

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Projects

ARCADES: Algebraic Representations in Computer-Aided Design for complEx Shapes (H2020 MSCA - ETN)

Cite this