Response details are presented of small-scale Helmholtz resonators excited by grazing
turbulent boundary layer flow. A particular focus lies on scaling of the resonance, in relation …

Helmholtz resonators flush-mounted in a wall beneath turbulent boundary layer flow are
studied by focusing on their flow-induced excitation and effect on the grazing turbulent flow …

A resolvent analysis framework for the axial compressor is established, and the impedance
optimization is achieved based on the resolvent analysis framework for the impedance …

Abstract The influence of Impedance Boundary Condition (IBC) on transonic compressors is
investigated. A systematic input-output analytical framework is developed, which treats the …

This study investigates passive perforated surfaces that permit unsteady wall transpiration at
specific frequencies in response to pressure fluctuations at the wall. These surfaces are …

We investigate the impact of a single miniature Helmholtz resonator on wall-bounded
turbulence using time-resolved planar particle image velocimetry. A particular aim is to …

Wall-based active and passive flow control for drag reduction in low Reynolds number (Re)
turbulent flows can lead to three typical phenomena: i) attenuation or ii) amplification of the …

Shock wave/boundary layer interaction (SBLI) is one of the classical problems in high-speed
vehicles. The interactions are featured by separated flows, which are normally associated …

New flow control paradigms for wall-bounded flows are leveraging increasingly
sophisticated actuation strategies targeted near the wall surface including riblets, anisotropic …

This thesis delves into the manipulation of turbulence properties through innovative
compliant surface designs. Turbulence, known for its unpredictable fluid movements …