Comparison of fluidic oscillators and steady jets for separation control on a wall-mounted hump

Christopher Otto, Philipp Tewes, Jesse C. Little, Rene Woszidlo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

15 Scopus citations


An experimental study was conducted to compare performance and efficiency between fluidic oscillators and steady jets with respect to numerous well established flow control coefficients (e.g., momentum, mass flow, energy, etc.) in support of the development of active flow control technology. Different actuation modules were tested on an existing model of the NASA hump geometry. Time-averaged pressure measurements were conducted with high spatial resolution along both the chord and span of the model. Stereoscopic Particle Image Velocimetry is performed downstream of the actuation location to investigate the performance differences in more detail. Fluidic oscillators are superior to steady jets with respect to any flow control coefficient at a given spacing. This superiority is due to the existence of more coherent streamwise vortices for fluidic oscillators in comparison to steady jets.

Original languageEnglish (US)
Title of host publicationAIAA Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105241
StatePublished - 2018
Externally publishedYes
EventAIAA Aerospace Sciences Meeting, 2018 - Kissimmee, United States
Duration: Jan 8 2018Jan 12 2018

Publication series

NameAIAA Aerospace Sciences Meeting, 2018


OtherAIAA Aerospace Sciences Meeting, 2018
Country/TerritoryUnited States

ASJC Scopus subject areas

  • Aerospace Engineering


Dive into the research topics of 'Comparison of fluidic oscillators and steady jets for separation control on a wall-mounted hump'. Together they form a unique fingerprint.

Cite this