期刊
PHYSICS OF FLUIDS
卷 25, 期 3, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4793444
关键词
boundary layer turbulence; flow control; nonlinear control systems; robust control; statistical analysis
资金
- Air Force Office of Scientific Research [FA 9550-08-1-0049, FA 9550-09-1-0701]
- National Science Foundation [0747672]
- Engineering and Physical Sciences Research Council [EP/E017304/1]
- EPSRC [EP/E017304/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/E017304/1] Funding Source: researchfish
We review recent progress, based on the approach introduced by McKeon and Sharma [J. Fluid Mech. 658, 336-382 (2010)], in understanding and controlling wall turbulence. The origins of this analysis partly lie in nonlinear robust control theory, but a differentiating feature is the connection with, and prediction of, state-of-the-art understanding of velocity statistics and coherent structures observed in real, high Reynolds number flows. A key component of this line of work is an experimental demonstration of the excitation of velocity response modes predicted by the theory using non-ideal, but practical, actuation at the wall. Limitations of the approach and promising directions for future development are outlined. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4793444]
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