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Modeling of the Unsteady Aerodynamic Characteristics of the NACA 0015 Airfoil from the Data of Numerical Calculations of the Flow

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Abstract

The possible application of the results of numerical modeling in developing an approximate phenomenological mathematical aerodynamic model applicable in solving the problems of dynamics is studied with reference to the example of the unsteady flow past the NACA 0015 airfoil oscillating in the angle of attack at different frequencies, amplitudes, and mean angles of attack. For this purpose, the Reynolds equations are solved in both steady and unsteady formulations, together with the k–ω SST turbulence model. The results of the calculations are validated by means of comparing them with the experimental data. The model of the normal force and the longitudinal moment formulated within the framework of an approach introducing an internal dynamic variable is identified according to the data of calculations. The results of the modeling are compared with the numerical and experimental data. The comparison with the conventional approach to the modeling based on the linear unsteady model with the use of dynamic derivatives is also carried out.

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Funding

The study is carried out with the financial support of the Russian Science Foundation, project 21-19-00659.

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Authors and Affiliations

  1. Zhukovski Central Aerohydrodynamic Institute (TsAGI), 140180, Zhukovski, Moscow region, Russia

    K. A. Abramova, D. A. Alieva, V. G. Sudakov & A. N. Khrabrov

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  1. K. A. Abramova
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  2. D. A. Alieva
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  3. V. G. Sudakov
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  4. A. N. Khrabrov
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Correspondence to K. A. Abramova, D. A. Alieva, V. G. Sudakov or A. N. Khrabrov.

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Translated by M. Lebedev

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Abramova, K.A., Alieva, D.A., Sudakov, V.G. et al. Modeling of the Unsteady Aerodynamic Characteristics of the NACA 0015 Airfoil from the Data of Numerical Calculations of the Flow. Fluid Dyn 59, 130–144 (2024). https://doi.org/10.1134/S0015462823602929

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