Manipulation of the flow field about a Mach 3.4 projectile using off-axis laser energy deposition
THIS SEMINAR WILL BE BROADCAST OVER ZOOM: https://osu.zoom.us/j/160053152
Manipulation of high-speed flows is a challenging endeavor due to the need for appreciable control authority. As Mach number increases, mechanical devices become less effective due to their inherent inertia. Plasma-based methods of flow control offer a solution to this dilemma by allowing for rapidly increasing the local fluid temperature through energy deposition, thereby altering the local speed of sound. One such technique, laser energy deposition flow control (LED) can be applied without the necessity for modifying the object to be controlled, and has been shown to be useful as a tool for high-speed drag reduction. This work investigates the potential laser energy deposition to manipulate the flow past an ogive-cylinder body, for purposes of high-speed trajectory control. The goal in this study is to observe changes to velocity field downstream of the ogive-cylinder's shock structure, induced by off-axis spark generation. By effecting a change to the ogive's shock, a change in the aerodynamic loading can be achieved, resulting in a momentary side force. Stereoscopic particle image velocimetry was used to quantify the flow field, providing for phase-averaged measurements following spark generation. In this talk, I will be discussing the measurements recently performed to quantify changes induced to the velocity field; in addition, an overview of the current capabilities at Rutgers will be provided, detailing our proficiency in performing quantitative measurements of high-speed flows.
Edward P. DeMauro, Ph.D. is an assistant professor of Aerospace Engineering at Rutgers University. Since 2017, Prof. DeMauro has been the director of the Emil Buehler Supersonic Wind Tunnel and the Rutgers University Gas Dynamics Research Lab. Prof. DeMauro’s group investigates projects involving three-dimensional shock-boundary layer interactions, shock-vortex interactions, and high-speed flow control. His research team is especially skilled at using stereoscopic particle image velocimetry to interrogate supersonic flows. Prior to joining Rutgers University, Prof. DeMauro was a postdoctoral appointee at Sandia National Labs, within the Sandia Aerosciences department. Prof. DeMauro obtained his doctorate in Mechanical Engineering from Rensselaer Polytechnic Institute, along with his bachelor and master’s degrees in Aerospace Engineering from SUNY University at Buffalo. In addition, Prof. DeMauro is a senior member of AIAA, having served as an associate member of the Fluid Dynamics Technical Committee since 2017.