Active control of flow and aerodynamic noise over a cavity using thin ceramic actuators

Yuzuru Yokokawa, Yu Fukunishi, Satoshi Kikichi

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


An experimental investigation attempting to actively control the flow over a cavity and to reduce the aerodynamic noise is carried out. Thin piezoelectric pieces are used as the actuators. Two types of piezo-ceramic devices, a uni-morph type and a bi-morph type, are compared. Experimental results show that both types are capable of generating a flow field that is 180 degree out of phase along the spanwise direction. However, the uni-morph type piezo-ceramic actuator pieces can control the flow under wider range of experimental conditions. The unimorph type actuator pieces are also more effective in suppressing the aerodynamic noise.

Original languageEnglish
Pages (from-to)2218-2225
Number of pages8
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Issue number661
Publication statusPublished - 2001 Sep


  • Active Flow Control
  • Aerodynamic Noise
  • Bimorph
  • Cavity
  • Piezoceramic
  • Uni-Morph

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering


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