Noise Prediction of a Rudimentary Landing Gear Using Detached-Eddy Simulation

  • L. Wang
  • C. Mockett
  • T. Knacke
  • F. Thiele
Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design book series (NNFM, volume 117)

Abstract

Detached-Eddy Simulation (DES) is a promising method for efficient simulation of broadband noise at minimal computational cost. Here, results from a study of broadband noise simulation using state-of-the-art DES methods are presented for a rudimentary landing gear configuration. The DDES and IDDES variants are compared with experiments in incompressible simulations. IDDES shows mild improvement in agreement and some increase in the resolution of high frequencies. An attempt is made to independently verify published results for far-field sound prediction, using a compressible simulation coupled with Ffowcs-Williams/Hawkings (FWH) integration. In contrast to the published results, our results do not provide evidence of unexpectedly strong roles played by the ceiling or by quadrupoles. Our results furthermore predict much lower far-field noise levels than the published results. Good agreement between solid and permeable FWH surfaces is found as long as the permeable surfaces are open downstream.

Keywords

Permeable Surface Front Wheel Rear Wheel Horseshoe Vortex Hanging Node 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • L. Wang
    • 1
  • C. Mockett
    • 1
    • 2
  • T. Knacke
    • 1
  • F. Thiele
    • 2
  1. 1.Institute of Fluid Mechanics and Engineering AcousticsTechnische Universität BerlinBerlinGermany
  2. 2.CFD Software Entwicklungs- und Forschungsgesellschaft mbHBerlinGermany

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