Prediction of flow noise from in-duct spoilers using computational fluid dynamics

Cheuk Ming Mak, Xu Wang, Zheng Tao Ai

Research output: Journal article publicationJournal articleAcademic researchpeer-review

11 Citations (Scopus)


This paper presents a method for the prediction of flow noise from in-duct spoilers using Computational Fluid Dynamics (CFD). Previous work conducted by Mak [Mak CM. A prediction method for aerodynamic sound produced by multiple elements in air ducts. J Sound Vib 2005;287:395-403] and Mak et al. [Mak CM, Wu J, Ye C, Yang J. Flow noise from spoilers in ducts. J Acoust Soc Am 2009;125:3756-65] provides a method for such a prediction based on experimental data. In this work, the advanced Large-eddy Simulation turbulence model (LES) is used to compute the mean pressure drop across spoilers and the fluctuating drag forces acting on them. The predictions of the numerical simulation agree well with those based on experimental data and the actual, measured levels. With the aid of CFD simulation, engineers are now able to use the prediction method developed by the authors to predict the flow noise from in-duct spoilers using the LES turbulence model.
Original languageEnglish
Pages (from-to)386-390
Number of pages5
JournalApplied Acoustics
Publication statusPublished - 1 Jan 2014


  • Computational fluid dynamics
  • Flow noise
  • In-duct spoilers
  • Large-eddy simulation

ASJC Scopus subject areas

  • Acoustics and Ultrasonics


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