4 papers · 1 filter
Data-driven linear analysis of turbulent flows
Benjamin Herrmann, Katherine Cao, Carlos A. Gonzalez +2
Mean-flow-based linear analyses of turbulent flows, such as resolvent analysis, provide valuable insight about flow structures and their dynamics that has been widely leveraged to…
A resolvent-based perspective on the generation of Mach wave radiation from compressible boundary layers
Anagha Madhusudanan, Gregory Stroot, Beverley J. McKeon
We identify forcing mechanisms that separately amplify subsonic and supersonic features obtained from a linearized Navier-Stokes based model for compressible parallel boundary laye…
Coupled dynamics of wall pressure and transpiration, with implications for the modeling of tailored surfaces and turbulent drag reduction
Simon Toedtli, Anthony Leonard, Beverley McKeon
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 o…
Basset-Boussinesq history force and inertia are relevant for unsteady particle settling dynamics
Tomek Jaroslawski, Divya Jaganathan, Rama Govindarajan +1
Our experiments on a sphere falling under gravity in Stokes flow show significant history effects. We observe an algebraic, not exponential, relaxation rate to the terminal velocit…