Characterization of inclined oscillating jet and crossflow interaction for use in active flow control

Vanessa G. Awate, Phillip J. Ansell

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

Abstract

PIV experiments were conducted to understand the interaction of an inclined fluidic oscillator jet and crossflows across a range of different blowing ratios. The fluidic oscillator used in the current study featured rounded internal feedback channels and produced a spatially oscillating jet at a predictable frequency. When integrated into aerodynamic bodies, fluidic oscillators have the potential to re-energize boundary layers and delay the onset of flow separation at high angles of attack. Understanding the effects of blowing ratios on mixing characteristics and turbulent interactions in the flow can shed light on the effectiveness of such fluidic oscillators for active flow control purposes. A fluidic oscillator with an aspect ratio of 2 and inclination angle of 30° was designed and tested at different mass flow rates through the jet for a given freestream condition. The variation in the subsequent interactions produced with varying jet velocity, relative to the crossflow, were considered. For the considered blowing ratios, the development and convection of high momentum regions were observed across the flow field. For a higher blowing ratio, the downstream propagation of these regions was accompanied by larger spanwise and wall-normal jet penetration into the boundary layer.

Original languageEnglish (US)
Title of host publicationAIAA Scitech 2020 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105951
DOIs
StatePublished - 2020
EventAIAA Scitech Forum, 2020 - Orlando, United States
Duration: Jan 6 2020Jan 10 2020

Publication series

NameAIAA Scitech 2020 Forum
Volume1 PartF

Conference

ConferenceAIAA Scitech Forum, 2020
CountryUnited States
CityOrlando
Period1/6/201/10/20

ASJC Scopus subject areas

  • Aerospace Engineering

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