Computing and Visualization in Science

, Volume 10, Issue 3, pp 123–134 | Cite as

Numerical simulation of flow-induced cavity noise in self-sustained oscillations

  • Zong-Kang Wang
  • Georgi Djambazov
  • Choi-Hong Lai
  • Koulis Pericleous
Regular article


The generation and near-field radiation of aerodynamic sound from a low-speed unsteady flow over a two-dimensional automobile door cavity is simulated by using a source-extraction-based coupling method. In the coupling procedure, the unsteady cavity flow field is first computed solving the Reynolds- averaged Navier–Stokes (RANS) equations. The radiated sound is then calculated by using a set of acoustic perturbation equations with acoustic source terms which are extracted from the time-dependent solutions of the unsteady flow. The aerodynamic and its resulting acoustic field are computed for the Reynolds number of 53,266 based on the base length of the cavity. The free stream flow velocity is taken to be 50.9 m/s. As first stage of the numerical investigation of flow-induced cavity noise, laminar flow is assumed. The CFD solver is based on a cell-centered finite volume method. A dispersion-relation-preserving (DRP), optimized, fourth-order finite difference scheme with fully staggered-grid implementation is used in the acoustic solver.


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Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • Zong-Kang Wang
    • 1
  • Georgi Djambazov
    • 1
  • Choi-Hong Lai
    • 1
  • Koulis Pericleous
    • 1
  1. 1.School of Computing and Mathematical SciencesUniversity of GreenwichLondonUK

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