Development of Energetic Actuators for Shear and Vortex Dominated Flow Control
Abstract
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 (JHU/APL), in collaboration with the Florida State University Advanced Aero-Propulsion Laboratory (FSU/AAPL), 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 FSU/AAPL and the 1-D numerical model developed at JHU/APL. 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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 19, 2014
- Accession Number
- AD1013200
Entities
People
- B. Z. Cybyk
- S. H. Popkin
- T. M. Taylor
Organizations
- Florida State University
- Johns Hopkins University