Accession Number:



Development of Energetic Actuators for Shear and Vortex Dominated Flow Control

Descriptive Note:

[Technical Report, Final Report]

Corporate Author:

The Johns Hopkins University/Applied Physics LaboratoryFlorida State University Advanced Aero-Propulsion Laboratory

Report Date:


Pagination or Media Count:



Active flow control AFC techniques available for high-speed flow applications, including supersonic and hypersonic, are very limited. The Johns Hopkins University Applied Physics Laboratory JHUAPL, in collaboration with the Florida State University Advanced Aero-Propulsion Laboratory FSUAAPL, is investigating and developing a promising device for high-speed flow control called the SparkJet actuator. This actuator, which produces a synthetic jet with high exhaust velocities, holds the promise of manipulating high-speed flows without active mechanical components. Computational Fluid Dynamic CFD modeling is used to investigate the predicted fundamental physics and flow interactions within and near the SparkJet actuator. The CFD results were used for comparison to microschlieren imagery acquired at FSUAAPL and the 1-D numerical model developed at JHUAPL. To further verify the model accuracy, experimental testing involving time-dependent, pressure measurements of the actuator cavity pressure as a function of orifice diameter, cavity volume, and energy deposition. Finally, the SparkJet actuator design has been modified to create reliable and efficient devices.

Subject Categories:

  • Fluid Mechanics
  • Machinery and Tools

Distribution Statement:

[A, Approved For Public Release]