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Numerical Stall Behavior Investigation of an Aircraft Equipped with Coanda Flap and Droop Nose Read chapter Read first chapter

2016 | OriginalPaper | Chapter

CFD/CSD Trim Coupled Simulation of the HART II Rotor with Higher Harmonic Control

Author : Annika Länger

Published in: New Results in Numerical and Experimental Fluid Mechanics X

Publisher: Springer International Publishing

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Abstract

The TAU-HOST coupling chain for Fluid-Structure Interaction (FSI) simulations of active helicopter-rotors is validated by computing the HART II experiment. The result accuracy of the unstructured flow solver TAU is investigated in the case of a rotor which experiences Higher Harmonic Controls (HHC). Investigations are performed by a code-to-code comparison with the experiment, FLOWer-HOST, and literature. Moreover, a time-step study and mesh refinement study were performed but improvement of Blade-Vortex Interaction (BVI) intensity fell short of expectations. Nevertheless, results of rotor controls, blade loads and blade deformation show good agreement with experimental data and are in accordance with literature.

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previous chapter Comparison Between Two-Dimensional and Three-Dimensional Dynamic Stall
next chapter Experimental Investigation of Dynamic Stall on a Pitching Rotor Blade Tip
Literature
1.
Wall, B.V.D., et al.: The HART II test in the LLF of the DNW—a major step towards rotor wake understanding. In: 28th European Rotorcraft Forum Proceedings (2002)
2.
Smith, M., et al.: An assessment of CFD/CSD prediction state-of-the-art using the HART II international workshop data. In: 68th AHS annual forum (2012) (May 1–3)
3.
Benoit, B., et al.: HOST, a general helicopter simulation tool for Germany and France. In: 56th AHS annual forum (2000) (May 2–4)
4.
Altmikus, A.: Nichtlineare Simulation der Strömungs-Struktur-Wechselwirkung am Hubschrauberrotor. PhD thesis, Institut für Aerodynamik und Gasdynamik, University Stuttgart (2004)
5.
Boisard, R., et al.: Assessment of aeromechanics and acoustics methods for BVI prediction using CFD. In: 39th European Rotorcraft Forum (2012)
6.
Wendisch, J.-H., Raddatz, J.: Validation of an unstructured CFD solver for complete helicopter configurations with loose CSD-trim coupling. In: 40th European Rotorcraft, Forum 1–3 (2014)
7.
Schwarz, T., Pahlke, K.: Generation of an advanced helicopter experimental aerodynamic data base for CFD validation—the European GOAHEAD project. Aerospace Science and Technology (2012)
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Schwamborn, D., et al.: The DLR TAU-Code: recent applications in research and industry. ECCOMAS CDF 2006, 5–8 (2006)
9.
Raddatz, J., Fassbender, J.: Block structured Navier-Stokes solver FLOWer. MEGAFLOW—numerical flow simulation for aircraft design. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol. 89 (2005)
10.
Park, J.-S., et al.: Loosely-coupled multibody dynamics/CFD analysis for a rotor in descending flight. Aerospace Science and Technology, vol. 29, No. 1 (2013)
Metadata
Title
CFD/CSD Trim Coupled Simulation of the HART II Rotor with Higher Harmonic Control
Author
Annika Länger
Copyright Year
2016
Book
New Results in Numerical and Experimental Fluid Mechanics X

Print ISBN: 978-3-319-27278-8

Electronic ISBN: 978-3-319-27279-5

Copyright Year: 2016

DOI
https://doi.org/10.1007/978-3-319-27279-5_29

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