Research projects

Bodony participating in three new hypersonic research projects | aerospace engineering

Daniel J. Bodony

Aerospace Engineering Professor Daniel J. Bodony is part of the research leadership teams for recently funded projects from the Air Force Office of Scientific Research, the National Science Foundation, and the University Consortium for Applied Hypersonics.

“Unsteady, high-velocity aerodynamic flows in hypersonic flight systems generate large-amplitude thermomechanical loads on the underlying structure, causing it to react dynamically and alter the original flow field,” said Bodonia. “The Air Force Office of Scientific Research funded a project to study the fluid-thermal-structural interaction that occurs when an oblique shock generated by the fins of a Mach 6-10 flow brushes against a flat metal panel integrated into an otherwise rigid device.”

Bodony said experiments will be conducted in the University of Maryland’s high-temperature Ludwieg tube using focused schlieren, photogrammetry, and pressure- and temperature-sensitive paints to measure unstable aerodynamics and dynamic response. of the panel over a range of Mach numbers, Reynolds numbers and panels. thicknesses.

“We will also develop a fiber optic technique to measure the dynamic thermomechanical response of the panel,” Bodony said.

The NSF project includes Bodony and his group at the Center for Hypersonic and Entry Systems Studies at the University of Illinois at Urbana-Champaign.

Direct numerical simulation results visualizing imposed vorticity on an experimental test object indicating laminar separation
Direct numerical simulation results visualizing imposed vorticity on an experimental test object indicating laminar separation

“We are going to conduct multiphysics simulations of hypersonic vehicle systems, towards whole-vehicle simulation,” Bodony said. “The simulations seek to couple multiple domain-specific codes, such as computational fluid dynamics, radiation transport, thermo-structural response, and ablation, into a coordinated, event-driven framework suitable for new supercomputers. generation to be deployed by the NSF at their Leadership-class computing facility at the Texas Advanced Computing Center.

Bodony’s postdoctoral research associate Rob Chiodi and Blaine Vollmer, his Ph.D. student, will develop and use the coordination framework and run the simulations.

The UCAH-funded project will design and test a prototype system that extends the capabilities of the scramjet propulsion by improving its operational robustness and dramatically expanding its operational range, through distributed plasma actuation.

“This will be demonstrated in a continuously running scramjet engine located in the Notre Dame Turbomachinery Laboratory,” Bodony said. “It will use an active control system based on patterned electrical energy deposition that has proven effective in controlling an insulator shock train and prolonging combustion stability by more than a factor of two. “

Bodony said the goal is to optimize isolator and combustor performance for a wide range of conditions representative of non-design flight operation, including extreme transient maneuvers.

“The project will involve a combination of high-fidelity simulations, including the effects of electrical energy deposition, and experimental validation. The validated simulation will ultimately be used to design large-scale systems,” he said.

This project includes a team of faculty and graduate students from UIUC and the University of Notre Dame, as well as research scientists with Department of Defense prime contractors Aerojet Rocketdyne and Lockheed Martin, and a small minority-owned company, FGC-Plasma.