2D URANS simulation of aerodynamic loads on a pitching airfoil: Impact of computational parameters

Onderzoeksoutput: Bijdrage aan congresAbstractAcademic

Uittreksel

A numerical study of aerodynamic loads on pitching airfoils using Computational Fluid Dynamics (CFD) is challenging due complicated airfoil-vortex interactions and the possible occurrence of dynamic stall. In the latter case the combination of boundary layer transitions and airfoil oscillations result in the generation, passage and shedding of vortex-like disturbances over the suction side of the airfoil. The challenges in the numerical investigation of aerodynamic loads on a pitching airfoil are twofold: different kinematic parameters can play an important role in flow unsteadiness and dynamic stall behavior, and the CFD results can be very susceptible to the model parameters adopted. Thus, a systematic quantification of how these parameters affect the flow is of great importance to identify crucial computational parameters and to understand the physical effect of kinematic parameters. This paper presents the aerodynamic load coefficients of a NACA 0012 pitching airfoil in the deep dynamic stall regime, and the results obtained are compared with measurements from a reference wind tunnel experiment. The impact of various important computational parameters on the numerical results is investigated, which are the blockage ratio, time step size, freestream turbulence intensity and the specific turbulence model used.

Congres

Congres7th European and African Conference on Wind Engineering (EACWE 2017)
Verkorte titelEACWE 2017
LandBelgië
StadLiège
Periode4/07/177/07/17
Internet adres

Vingerafdruk

Aerodynamic loads
Airfoils
Computational fluid dynamics
Kinematics
Vortex flow
Turbulence models
Wind tunnels
Boundary layers
Turbulence

Trefwoorden

    Citeer dit

    Geng, F., Kalkman, I. M., Suiker, A. S. J., & Blocken, B. J. E. (2017). 2D URANS simulation of aerodynamic loads on a pitching airfoil: Impact of computational parameters. Abstract van 7th European and African Conference on Wind Engineering (EACWE 2017), Liège, België.
    Geng, F. ; Kalkman, I.M. ; Suiker, A.S.J. ; Blocken, B.J.E./ 2D URANS simulation of aerodynamic loads on a pitching airfoil: Impact of computational parameters. Abstract van 7th European and African Conference on Wind Engineering (EACWE 2017), Liège, België.
    @conference{edf3cff5a38d44a5940b8c45b560e513,
    title = "2D URANS simulation of aerodynamic loads on a pitching airfoil: Impact of computational parameters",
    abstract = "A numerical study of aerodynamic loads on pitching airfoils using Computational Fluid Dynamics (CFD) is challenging due complicated airfoil-vortex interactions and the possible occurrence of dynamic stall. In the latter case the combination of boundary layer transitions and airfoil oscillations result in the generation, passage and shedding of vortex-like disturbances over the suction side of the airfoil. The challenges in the numerical investigation of aerodynamic loads on a pitching airfoil are twofold: different kinematic parameters can play an important role in flow unsteadiness and dynamic stall behavior, and the CFD results can be very susceptible to the model parameters adopted. Thus, a systematic quantification of how these parameters affect the flow is of great importance to identify crucial computational parameters and to understand the physical effect of kinematic parameters. This paper presents the aerodynamic load coefficients of a NACA 0012 pitching airfoil in the deep dynamic stall regime, and the results obtained are compared with measurements from a reference wind tunnel experiment. The impact of various important computational parameters on the numerical results is investigated, which are the blockage ratio, time step size, freestream turbulence intensity and the specific turbulence model used.",
    keywords = "Pitching airfoil, dynamic stall, CFD simulation, sensitivity study",
    author = "F. Geng and I.M. Kalkman and A.S.J. Suiker and B.J.E. Blocken",
    year = "2017",
    language = "English",
    note = "7th European and African Conference on Wind Engineering (EACWE 2017), EACWE 2017 ; Conference date: 04-07-2017 Through 07-07-2017",
    url = "http://aimontefiore.org/EACWE2017/",

    }

    2D URANS simulation of aerodynamic loads on a pitching airfoil: Impact of computational parameters. / Geng, F.; Kalkman, I.M.; Suiker, A.S.J.; Blocken, B.J.E.

    2017. Abstract van 7th European and African Conference on Wind Engineering (EACWE 2017), Liège, België.

    Onderzoeksoutput: Bijdrage aan congresAbstractAcademic

    TY - CONF

    T1 - 2D URANS simulation of aerodynamic loads on a pitching airfoil: Impact of computational parameters

    AU - Geng,F.

    AU - Kalkman,I.M.

    AU - Suiker,A.S.J.

    AU - Blocken,B.J.E.

    PY - 2017

    Y1 - 2017

    N2 - A numerical study of aerodynamic loads on pitching airfoils using Computational Fluid Dynamics (CFD) is challenging due complicated airfoil-vortex interactions and the possible occurrence of dynamic stall. In the latter case the combination of boundary layer transitions and airfoil oscillations result in the generation, passage and shedding of vortex-like disturbances over the suction side of the airfoil. The challenges in the numerical investigation of aerodynamic loads on a pitching airfoil are twofold: different kinematic parameters can play an important role in flow unsteadiness and dynamic stall behavior, and the CFD results can be very susceptible to the model parameters adopted. Thus, a systematic quantification of how these parameters affect the flow is of great importance to identify crucial computational parameters and to understand the physical effect of kinematic parameters. This paper presents the aerodynamic load coefficients of a NACA 0012 pitching airfoil in the deep dynamic stall regime, and the results obtained are compared with measurements from a reference wind tunnel experiment. The impact of various important computational parameters on the numerical results is investigated, which are the blockage ratio, time step size, freestream turbulence intensity and the specific turbulence model used.

    AB - A numerical study of aerodynamic loads on pitching airfoils using Computational Fluid Dynamics (CFD) is challenging due complicated airfoil-vortex interactions and the possible occurrence of dynamic stall. In the latter case the combination of boundary layer transitions and airfoil oscillations result in the generation, passage and shedding of vortex-like disturbances over the suction side of the airfoil. The challenges in the numerical investigation of aerodynamic loads on a pitching airfoil are twofold: different kinematic parameters can play an important role in flow unsteadiness and dynamic stall behavior, and the CFD results can be very susceptible to the model parameters adopted. Thus, a systematic quantification of how these parameters affect the flow is of great importance to identify crucial computational parameters and to understand the physical effect of kinematic parameters. This paper presents the aerodynamic load coefficients of a NACA 0012 pitching airfoil in the deep dynamic stall regime, and the results obtained are compared with measurements from a reference wind tunnel experiment. The impact of various important computational parameters on the numerical results is investigated, which are the blockage ratio, time step size, freestream turbulence intensity and the specific turbulence model used.

    KW - Pitching airfoil

    KW - dynamic stall

    KW - CFD simulation

    KW - sensitivity study

    M3 - Abstract

    ER -

    Geng F, Kalkman IM, Suiker ASJ, Blocken BJE. 2D URANS simulation of aerodynamic loads on a pitching airfoil: Impact of computational parameters. 2017. Abstract van 7th European and African Conference on Wind Engineering (EACWE 2017), Liège, België.