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Active Control of Laminar Boundary Layer Using Various Wall Motions

J. Qiu1, T. Hayase1, T. Okutani1
Inst. of Fluid Sci., Tohoku Univ., Sendai, Japan

Computers, Materials & Continua 2004, 1(4), 301-308. https://doi.org/10.3970/cmc.2004.001.301

Abstract

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.

Keywords

boundary layer, Tollmien-Schlichting wave control, wall motion actuator.

Cite This Article

. , "Active control of laminar boundary layer using various wall motions," Computers, Materials & Continua, vol. 1, no.4, pp. 301–308, 2004.



This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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