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Numerical investigation of laminar vortex shedding applying a discontinuous Galerkin Finite Element method

Niroobakhsh, Zahra and Emamy, Nehzat and Mousavi, Roozbeh and Kummer, Florian and Oberlack, Martin (2015):
Numerical investigation of laminar vortex shedding applying a discontinuous Galerkin Finite Element method.
In: Progress in Computational Fluid Dynamics, An International Journal, p. 1, 1, (1), ISSN 1468-4349,
[Online-Edition: http://dx.doi.org/10.1504/PCFD.2015.10001170],
[Article]

Abstract

Two-dimensional vortex sheddings in the wakes of a circular cylinder and a NACA 0012 airfoil, respectively, are numerically investigated by applying a discontinuous Galerkin Finite Element method (DG). The fluid flow is assumed to be laminar and incompressible. The in-house code BoSSS, in which the projection scheme of [Karniadakis GE, Israeli M, Orszag SA. Journal of Computational Physics 1991; 97:414443] is implemented, is employed for performing the numerical simulations. In order to validate and assess this new approach, it has been applied to several generic flow configurations (i.e. flow past a cylinder, flow over an airfoil). For the cylinder, the flow for the low Reynolds numbers up to 100 is considered and the onset of vortex shedding is investigated. For the airfoil, the Strouhal numbers are computed for low to moderate angles of attack. The computed flow patterns around the airfoil are in a good agreement with the available experimental and numerical data.

Item Type: Article
Erschienen: 2015
Creators: Niroobakhsh, Zahra and Emamy, Nehzat and Mousavi, Roozbeh and Kummer, Florian and Oberlack, Martin
Title: Numerical investigation of laminar vortex shedding applying a discontinuous Galerkin Finite Element method
Language: English
Abstract:

Two-dimensional vortex sheddings in the wakes of a circular cylinder and a NACA 0012 airfoil, respectively, are numerically investigated by applying a discontinuous Galerkin Finite Element method (DG). The fluid flow is assumed to be laminar and incompressible. The in-house code BoSSS, in which the projection scheme of [Karniadakis GE, Israeli M, Orszag SA. Journal of Computational Physics 1991; 97:414443] is implemented, is employed for performing the numerical simulations. In order to validate and assess this new approach, it has been applied to several generic flow configurations (i.e. flow past a cylinder, flow over an airfoil). For the cylinder, the flow for the low Reynolds numbers up to 100 is considered and the onset of vortex shedding is investigated. For the airfoil, the Strouhal numbers are computed for low to moderate angles of attack. The computed flow patterns around the airfoil are in a good agreement with the available experimental and numerical data.

Journal or Publication Title: Progress in Computational Fluid Dynamics, An International Journal
Volume: 1
Number: 1
Uncontrolled Keywords: BoSSS
Divisions: 16 Department of Mechanical Engineering
16 Department of Mechanical Engineering > Fluid Dynamics (fdy)
Exzellenzinitiative > Graduate Schools > Graduate School of Computational Engineering (CE)
Exzellenzinitiative > Graduate Schools
Exzellenzinitiative
Date Deposited: 13 Dec 2016 06:43
Official URL: http://dx.doi.org/10.1504/PCFD.2015.10001170
Identification Number: doi:10.1504/PCFD.2015.10001170
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