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Body Force Modelling of Internal Geometry for Jet Noise Prediction

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Advances in Simulation of Wing and Nacelle Stall (FOR 1066 2014)

Part of the book series: Notes on Numerical Fluid Mechanics and Multidisciplinary Design ((NNFM,volume 131))

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Abstract

The noise produced by aeroengines is a critical topic in engine design. Large-Eddy Simulation (LES) and hybrid Reynolds-Averaged Navier-Stokes (RANS)-LES provides a method to increase understanding of influences on the noise produced and could lead to improved models for use in design. Use of Immersed Boundary (IB) and Body Force Methods (BFM) allows arbitrary geometry to be added rapidly and so this is explored to model internal geometry effects on jet noise. This reduces grid complexity and broadens the accessible design space by reducing setup time and computational cost. Using LES and BFM/IB, many effects that are difficult to test experimentally can be assessed numerically within useful time-frames. To enable challenging targets for jet noise to be met, the importance of the many influences on jet noise must be understood. These include the use of, single or dual stream jet nozzles, the presence (or lack of) of a pylon, wing, flap and deflection angles, nozzle serrations, eccentricity, temperature and velocity ratio, flight stream and upstream/internal geometry effects. The latter effects are the main focus of this study.

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Authors and Affiliations

  1. University of Cambridge, Cambridge, England

    James C. Tyacke, Iftekhar Z. Naqavi & Paul G. Tucker

Authors
  1. James C. Tyacke
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  2. Iftekhar Z. Naqavi
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  3. Paul G. Tucker
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Corresponding author

Correspondence to James C. Tyacke .

Editor information

Editors and Affiliations

  1. Institute of Fluid Mechanics, Technische Universität Braunschweig, Braunschweig, Germany

    Rolf Radespiel

  2. Institute of Jet Propulsion, Universität der Bundeswehr München, Neubiberg, Germany

    Reinhard Niehuis

  3. Institute of Aerodynamics and Flow Technology, German Aerospace Center (DLR), Braunschweig, Germany

    Norbert Kroll

  4. Institute of Fluid Mechanics, Technische Universität Braunschweig, Braunschweig, Germany

    Kathrin Behrends

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Tyacke, J.C., Naqavi, I.Z., Tucker, P.G. (2016). Body Force Modelling of Internal Geometry for Jet Noise Prediction. In: Radespiel, R., Niehuis, R., Kroll, N., Behrends, K. (eds) Advances in Simulation of Wing and Nacelle Stall. FOR 1066 2014. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol 131. Springer, Cham. https://doi.org/10.1007/978-3-319-21127-5_6

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  • DOI: https://doi.org/10.1007/978-3-319-21127-5_6

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-21126-8

  • Online ISBN: 978-3-319-21127-5

  • eBook Packages: EngineeringEngineering (R0)

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