Numerical study of nonlinear fluid-structure interaction of an excited panel in viscous flow

Harris K.H. Fan, Garret C.Y. Lam, Randolph C.K. Leung

Research output: Chapter in book / Conference proceedingChapter in an edited book (as author)Academic researchpeer-review

2 Citations (Scopus)


Vibration of flexible panel induced by flow and acoustic processes in a duct can be used for silencer design, but it may conversely generate noise if structural instability is induced. Therefore, a complete understanding of fluid-structure interaction is important for effective noise reduction. A new time-domain numerical methodology has been developed for the calculation of the nonlinear fluid-structure interaction of an excited panel in internal viscous flow. This paper reports its validation with two experiments. The first aims to validate that the methodology is able to capture flow-induced structural instability and its acoustic radiation. The second one is to show that the methodology captures the aeroacoustic-structural interaction in a low-frequency silencer and its response correctly. The importance of inclusion of viscous effect in both cases is also discussed.

Original languageEnglish
Title of host publicationFlinovia-Flow Induced Noise and Vibration Issues and Aspects-II
Subtitle of host publicationA Focus on Measurement, Modeling, Simulation and Reproduction of the Flow Excitation and Flow Induced Response
PublisherSpringer International Publishing
Number of pages17
ISBN (Electronic)9783319767802
ISBN (Print)9783319767796
Publication statusPublished - 25 May 2018


  • Flow-induced structural instability Aeroacoustic-structural interaction
  • Fluid-structure interaction
  • Viscous effect

ASJC Scopus subject areas

  • General Engineering
  • General Physics and Astronomy


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