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Updated: Jun 3, 2026
09:17
Experimental Investigation of the Flow Structure over a Delta Wing Via Flow Visualization Methods
Published on: April 23, 2018
Some aspects of aerodynamic flow control using synthetic-jet actuation
1Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA. ari.glezer@me.gatech.edu
Summary
Surface-mounted synthetic jets control airflow by manipulating vortex structures without adding mass. This method offers significant aerodynamic modifications for various flow conditions.
Area of Science:
- Fluid dynamics
- Aerodynamics
- Active flow control
Background:
- Surface-mounted synthetic jets offer a novel approach to active flow control.
- These actuators operate without net mass injection, utilizing fluid dynamics principles.
Purpose of the Study:
- To review the interactions between synthetic jets and local cross flow.
- To explore their application in aerodynamic flow control.
Main Methods:
- Investigating the formation and advection of discrete vortical structures.
- Analyzing momentum transfer to the cross flow via these structures.
- Examining actuation time scales and their impact on flow control.
Main Results:
- Synthetic jets can induce large-scale flow modifications when actuation periods match base flow instabilities.
- High-frequency actuation can alter aerodynamic forces by generating and regulating near-surface vorticity.
- Effective control demonstrated for separated flows on bluff bodies and attached flows on lifting surfaces.
Conclusions:
- Synthetic jets provide a versatile tool for aerodynamic flow control.
- The method's effectiveness depends on the interplay between actuation parameters and flow characteristics.
- Potential applications span diverse aerodynamic challenges.
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