Active control of laminar boundary layer using various wall motions

J. Qiu, T. Hayase, T. Okutani

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


In this study, three types of surface motion of wall motion actuators were proposed and used to control the Tollmien-Schlichting (T-S) wave in the laminar boundary layer of a plate. These three types of motion are standing transverse wave (with out-of-plane displacement), traveling transverse wave (with out-of-plane displacement) and standing longitudinal wave (with in-plane displacement). The length of a wall motion actuator was set to 1, 2 or 3 cycles of waveform. Numerical simulation was performed on the generation of T-S wave and its suppression with the three types of surface motion of the wall motion actuator and the dependence of control effect on the amplitude and the phase of the surface motion, and the number of waveform was investigated.

Original languageEnglish
Pages (from-to)301-308
Number of pages8
JournalComputers, Materials and Continua
Issue number4
Publication statusPublished - 2004 Dec


  • Boundary layer
  • Tollmien-Schlichting wave control
  • Wall motion actuator


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