June 7, 2022 @ 3:00 pm - 4:00 pm
Please contact Veronica Turner for connection information.
The study of energetic material dynamics is often beset with various challenges, including a wide range of spatial scales from microns to meters and temporal scales from nanoseconds to seconds. Furthermore, the flow field can include high optical densities, complex optical interactions such as scattering and refraction, strong shocks, and chemical reactions. As such, there is a need to resolve such flows along multiple dimensions to understand the complex physics, with high temporal precision. In addition, there exists a wide range of parameters that should be investigated, including particle distributions, density gradients, velocities, and mass distributions of various species. This talk will focus on efforts to adapt various optical and X-ray diagnostics for the multi-dimensional study of energetic material dynamics at relevant scales. This includes the three-dimensional evolution of particle fields, shock wave interactions, and mass distributions of species at rates of 10 kHz to 5 MHz. Practical considerations, interferences, uncertainties, and future prospects for implementation in various flows of interest will be discussed.
Bio: Terrence R. Meyer, PhD specializes in the development and application of laser and x-ray diagnostics for multiphase flows and combustion in novel propulsion, energetic, defense, and hypersonic systems. After earning a doctorate in Mechanical Engineering at the University of Illinois at Urbana-Champaign, he served as a contract research scientist at the Air Force Research Laboratory (AFRL) Combustion Branch for six years, as a member of the Mechanical Engineering faculty at Iowa State University for nine years, and as a professor of Mechanical Engineering at Purdue University for seven years, where is he also a professor of Aeronautics and Astronautics by courtesy. He also formerly served as a visiting professor at Ecole Centrale Paris in France and at Erlangen University in Germany, and as Technical Director of private research firm Spectral Energies, LLC. He is currently the Chair of the Gordon Research Conference on Laser Diagnostics in Energy and Combustion Science, Colloquium Co-Chair for the Diagnostics Section of the 39th International Symposium on Combustion, and Honors and Awards Chair for the Aerodynamic Measurement Technology Committee of the American Institute of Aeronautics and Astronautics (AIAA). He is a Fellow of Optica (formerly Optical Society of America) and the American Society of Mechanical Engineers, and he is an Associate Fellow of the AIAA.