Suppression of panel flutter in supersonic flow based on acoustic black hole as a linear energy sink

Zhuogeng Zhang, Hongli Ji, Chongcong Tao, Jinhao Qiu, Li Cheng

Research output: Journal article publicationJournal articleAcademic researchpeer-review

1 Citation (Scopus)

Abstract

Panel flutter is a critical challenge for supersonic aircraft, impacting their structural integrity and safety. This study introduces a new method to suppress panel flutter in supersonic flow using an add-on acoustic black hole (AABH). Numerical simulations investigate the interaction between the panel and supersonic flow, comparing the panel only, panel with AABH, and panel with equivalent mass. Results show that the AABH increases the critical flutter velocity by 33.9%, outperforming the equivalent mass configuration (18.7%). The AABH acts as a linear energy sink with high damping and rich modal characteristics, transferring and dissipating energy from the supersonic flow effectively. This capability stabilizes the panel and reduces flutter amplitude, demonstrating the AABH's potential for supersonic flutter suppression.

Original languageEnglish
Article number118030
JournalJournal of Sound and Vibration
Volume571
DOIs
Publication statusPublished - 17 Feb 2024

Keywords

  • Acoustic black hole
  • Energy flow
  • Linear energy sink
  • Panel flutter

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Acoustics and Ultrasonics
  • Mechanical Engineering

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