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Parameter Study of Turbulent Drag Reduction by Spanwise Traveling Transversal Surface Waves
Author(s) -
Albers Marian,
Meysonnat Pascal S.,
Fernex Daniel,
Semaan Richard,
Noack Bernd R.,
Schröder Wolfgang
Publication year - 2019
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201900178
Subject(s) - drag , turbulence , mechanics , parasitic drag , boundary layer , transversal (combinatorics) , amplitude , wavelength , physics , flow (mathematics) , reduction (mathematics) , classical mechanics , materials science , optics , mathematics , geometry , mathematical analysis
Large‐eddy simulations of spanwise traveling transversal surface waves in turbulent boundary layer flow are conducted. The parameter space of period, amplitude, and wavelength is investigated by 80 simulations. A maximum decrease of the averaged drag by 26 percent is obtained and an approximate scaling law for the decrease of the skin friction is found.