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Drag reduction of spanwise transversal traveling surface waves with stepwise amplitude increase
Author(s) -
Meysonnat Pascal S.,
Albers Marian,
Schröder Wolfgang
Publication year - 2017
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201710036
Subject(s) - drag , turbulence , amplitude , mechanics , reduction (mathematics) , physics , flow (mathematics) , parasitic drag , optics , geometry , mathematics
The effect of sudden amplitude changes of a spanwise traveling surface wave on turbulent boundary layers is investigated numerically using high resolution large‐eddy simulation (LES). The results show drag reduction of up to 9 percent and an adaptation of the turbulent flow to the changed input parameter within 100 convective times. (© 2017 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)