Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.authorTang, Zhanqien
dc.contributor.authorJiang, Nanen
dc.contributor.authorZheng, Xiaoboen
dc.contributor.authorWu, Yanhuaen
dc.identifier.citationTang, Z., Jiang, N., Zheng, X., & Wu, Y. (2019). Local dynamic perturbation effects on amplitude modulation in turbulent boundary layer flow based on triple decomposition. Physics of Fluids, 31(2), 025120-. doi:10.1063/1.5083224en
dc.description.abstractThis work studies amplitude modulation (AM) of a turbulent boundary layer flow perturbed by a wall-mounted piezoelectric (PZT) actuator. Hot-wire measurements were executed downstream of the PZT actuator working at a certain frequency but several different amplitudes. Turbulent nonlinear fluctuations acquired by triple decomposition were devoted to observing the AM effects. The PZT actuator has a significant impact on the distribution of AM coefficients and joint probability-density functions of large-scale fluctuations and the representatives of small scales in the inner region. Moreover, the energy dependence of small scales on large-scale structures was observed. It proposes that an interlayer region ofy+.14 characterized by strong energy dependence of high linear slope occurs between innate near-wall structures in the underlying boundary layer flow and wall surface. It was suggested that this interlayer probably suppresses turbulence generation and self-sustaining process of the near-wall cycle. In addition, the conditional AM coefficients further manifests that the AM in the interlayer is insensitive to the condition of large-scale structures.en
dc.format.extent14 p.en
dc.relation.ispartofseriesPhysics of Fluidsen
dc.rights© 2019 The Author(s). All rights reserved. This paper was published by AIP Publishing in Physics of Fluids and is made available with permission of The Author(s).en
dc.subjectAmplitude Modulationen
dc.subjectBoundary Layer Flowen
dc.subjectDRNTU::Engineering::Mechanical engineeringen
dc.titleLocal dynamic perturbation effects on amplitude modulation in turbulent boundary layer flow based on triple decompositionen
dc.typeJournal Articleen
dc.contributor.schoolSchool of Mechanical and Aerospace Engineeringen
dc.description.versionPublished versionen
item.fulltextWith Fulltext-
Appears in Collections:MAE Journal Articles


Updated on Aug 31, 2020


Updated on Jan 11, 2021

Page view(s)

Updated on Jan 18, 2021


Updated on Jan 18, 2021

Google ScholarTM




Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.