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Studies on the Applicability of a Simplified Gust Simulation Approach in the CFD Code TAU

In: High Performance Computing in Science and Engineering '20

Author

Listed:
  • Jens Müller

    (University of Stuttgart, Faculty 6: Aerospace Engineering and Geodesy, Institute of Aerodynamics and Gas Dynamics)

  • Marco Hillebrand

    (University of Stuttgart, Faculty 6: Aerospace Engineering and Geodesy, Institute of Aerodynamics and Gas Dynamics)

  • Maximilian Ehrle

    (University of Stuttgart, Faculty 6: Aerospace Engineering and Geodesy, Institute of Aerodynamics and Gas Dynamics)

  • Michael Schollenberger

    (University of Stuttgart, Faculty 6: Aerospace Engineering and Geodesy, Institute of Aerodynamics and Gas Dynamics)

  • Thorsten Lutz

    (University of Stuttgart, Faculty 6: Aerospace Engineering and Geodesy, Institute of Aerodynamics and Gas Dynamics)

  • Ewald Krämer

    (University of Stuttgart, Faculty 6: Aerospace Engineering and Geodesy, Institute of Aerodynamics and Gas Dynamics)

Abstract

A simplified method for gust modeling in CFD simulations, the so-called Disturbance Velocity Approach (DVA), is analyzed within this work. This approach covers the influence of a gust on an aircraft but neglects the influence of the aircraft on the gust. Simulations of an airfoil encountering different “1-cos” gusts were performed. The results of the DVA are compared to simulations where the gust is fully resolved and propagated within the flow field and all interactions are considered. It is shown that the simplified approach provides satisfying results for gust wavelengths larger than the chord length. At smaller wavelength significant deviations to the resolved simulations exist especially regarding the pitching moment. In the present study angle of attack and airfoil shape were varied and the aerodynamic effects influencing the accuracy of the simplified approach are identified. The DVA also provides satisfying results for superposition of different gust signals. A scaling test of the TAU code on the HPE Hawk demonstrates good scalability.

Suggested Citation

  • Jens Müller & Marco Hillebrand & Maximilian Ehrle & Michael Schollenberger & Thorsten Lutz & Ewald Krämer, 2021. "Studies on the Applicability of a Simplified Gust Simulation Approach in the CFD Code TAU," Springer Books, in: Wolfgang E. Nagel & Dietmar H. Kröner & Michael M. Resch (ed.), High Performance Computing in Science and Engineering '20, pages 401-418, Springer.
    • Handle: RePEc:spr:sprchp:978-3-030-80602-6_26
    DOI: 10.1007/978-3-030-80602-6_26
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