Transonic flutter computations for the NLR 7301 supercritical airfoil

Weber, Stefan K.; Jones, Kevin D.; Ekaterinaris, John A.; Platzer, Max F.

doi:10.1016/s1270-9638(01)01099-9

Cited by 37 publications

(21 citation statements)

References 22 publications

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“…1. This is the same as the model that Weber et al 6) introduced. This structural model simulates the bending and twisting motions of a wing.…”

Section: )mentioning

confidence: 75%

“…In some studies, structural models are introduced coupled with CFD codes to calculate aeroelastic phenomena numerically. Castro et al 5) and Weber et al 6) simulated the two-dimensional flutter characteristics in compressible flow. Additionally, Le Maître et al 7) computed two-dimensional flutter by solving incompressible Navier-Stokes equations.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Simulation for Feedback Control of Airfoil Oscillation in Incompressible Flow

Maeda

Morishita

2006

Trans. Japan Soc. Aero. S Sci.

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Numerical simulations of the flow around a periodically vibrating airfoil and the two-degree-of-freedom (TDOF) bending-torsion flutter characteristics were carried out. An unsteady, two-dimensional, incompressible Navier-Stokes flow solver was coupled with a two-degree-of-freedom structural model for a flutter computation. To simulate unsteady phenomena, the Navier-Stokes equations are described by the ALE method. The Baldwin-Lomax turbulence model was implemented for high Reynolds number calculations. Computations of the periodically vibrating airfoil show agreement with Theodorsen's linearized theory and the existing results of some numerical analyses. Flutter was observed in the TDOF model coupled with the flow solver when the rigidity of the airfoil was small. A control method for the flow field was studied and the airfoil flutter was stabilized by a PID (Proportional-Integral-Derivative) control algorithm.

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“…1. This is the same as the model that Weber et al 6) introduced. This structural model simulates the bending and twisting motions of a wing.…”

Section: )mentioning

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Numerical Simulation for Feedback Control of Airfoil Oscillation in Incompressible Flow

Maeda

Morishita

2006

Trans. Japan Soc. Aero. S Sci.

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“…A numerical investigation of the 2-DOF bending/torsion flutter characteristics of an airfoil in 2D transonic flow was carried out by Weber et al [10] using RANS equations and Baldwin-Lomax turbulence model. The paper by Wang and Zha [9] investigates the NLR7301 airfoil limit cycle oscillation (LCO) in transonic flow caused by the flow nonlinearity using Detached Eddy Simulation (DES) of turbulence.…”

Section: Introductionmentioning

confidence: 99%

Parallel numerical simulation of oscillating airfoil NACA0015 in the channel due to flutter instability

Řidký

Šidlof

2014

EPJ Web of Conferences

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Abstract. The work is devoted to 3D and 2D parallel numerical computation of pressure and velocity fields around an elastically supported airfoil self-oscillating due to interaction with the airflow. Numerical solution is computed in the OpenFOAM package, an open-source software package based on finite volume method. Movement of airfoil is described by translation and rotation, identified from experimental data. A new boundary condition for the 2DOF motion of the airfoil was implemented. The results of numerical simulations (velocity) are compared with data measured in a wind tunnel, where a physical model of NACA0015 airfoil was mounted and tuned to exhibit the flutter instability. The experimental results were obtained previously in the Institute of Thermomechanics by interferographic measurements in a subsonic wind tunnel in Nový Knín.

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“…Among computational studies on flow-induced airfoil vibrations and flutter instabilities, a 2-DOF airfoil moving in both pitching and plunging mode was studied numerically for transonic flow by Geissler [6] using on a 2D Navier-Stokes equations solver and the SpalartAllmaras turbulence model. A numerical investigation of the 2-DOF bending/torsion flutter characteristics of an airfoil in 2D transonic flow was carried out by Weber et al [7] using RANS equations and Baldwin-Lomax turbulence model. The paper by Wang and Zha [8] investigates the NLR7301 airfoil limit cycle oscillation (LCO) in transonic flow caused by the flow nonlinearity using Detached Eddy Simulation (DES) of turbulence.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulations of the flow with the prescribed displacement of the airfoil and comparison with experiment

Řidký

Šidlof

Vlček

2013

EPJ Web of Conferences

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Abstract. The work is devoted to comparing measured data with the results of numerical simulations. As mathematical model was used mathematical model whitout turbulence for incompressible flow In the experiment was observed the behavior of designed NACA0015 airfoil in airflow. For the numerical solution was used OpenFOAM computational package, this is open-source software based on finite volume method. In the numerical solution is prescribed displacement of the airfoil, which corresponds to the experiment. The velocity at a point close to the airfoil surface is compared with the experimental data obtained from interferographic measurements of the velocity field. Numerical solution is computed on a 3D mesh composed of about 1 million ortogonal hexahedron elements. The time step is limited by the Courant number. Parallel computations are run on supercomputers of the CIV at Technical University in Prague (HAL and FOX) and on a computer cluster of the Faculty of Mechatronics of Liberec (HYDRA). Run time is fixed at five periods, the results from the fifth periods and average value for all periods are then be compared with experiment.

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Transonic flutter computations for the NLR 7301 supercritical airfoil

Cited by 37 publications

References 22 publications

Numerical Simulation for Feedback Control of Airfoil Oscillation in Incompressible Flow

Numerical Simulation for Feedback Control of Airfoil Oscillation in Incompressible Flow

Parallel numerical simulation of oscillating airfoil NACA0015 in the channel due to flutter instability

Numerical simulations of the flow with the prescribed displacement of the airfoil and comparison with experiment

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