Local dynamic perturbation effects on amplitude modulation in turbulent boundary layer flow based on triple decomposition

• Main Authors: Tang, Zhanqi, Jiang, Nan, Zheng, Xiaobo, Wu, Yanhua
• Other Authors: School of Mechanical and Aerospace Engineering
• Format: Article
• Language: English
• Published: 2019
• Subjects: Amplitude Modulation; Boundary Layer Flow; DRNTU::Engineering::Mechanical engineering
• Online Access: https://hdl.handle.net/10356/105660; http://hdl.handle.net/10220/48723
• Institution: Nanyang Technological University

This 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 fluctuation...