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Closed‐loop control of turbulent boundary layers using spanwise traveling surface waves
Author(s) -
Albers Marian,
Meysonnat Pascal S.,
Schröder Wolfgang
Publication year - 2018
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201800336
Subject(s) - turbulence , drag , mechanics , closed loop , boundary (topology) , loop (graph theory) , parasitic drag , surface (topology) , physics , boundary layer , amplitude , reduction (mathematics) , control theory (sociology) , controller (irrigation) , materials science , acoustics , optics , mathematics , geometry , mathematical analysis , control (management) , computer science , engineering , control engineering , combinatorics , agronomy , biology , artificial intelligence
The drag reduction technique of spanwise traveling surface waves in turbulent boundary layers is investigated in a closed‐loop control setup. The results show a dependence of the local skin friction on the spanwise coordinate and a successful application of the controller to determine the optimal amplitude.