Loren Hahn
Biography
Dr. Hahn joined the faculty at 91²Ö¿â in 2026. Prior to that, he was a National Research Council Postdoctoral Fellow at the Air Force Research Laboratory, where he developed mid-infrared diagnostics for quantitative two-dimensional imaging of combustion-relevant flowfields. He received his Ph.D. in Fluid Mechanics from the University of Notre Dame, where he studied the structure, dynamics, and control of shock trains in confined supersonic flows.
Dr. Hahn's research focuses on the fundamental physics of unsteady, compressible, and reacting flows. His work examines shock dynamics, mechanisms for passive and active flow control, and methods for shock-combustion coupling. His research combines advanced diagnostics, computation, and modeling to uncover and control the physics governing high-speed flows.
Education
B.S., Aerospace Engineering, University of Notre Dame
Publications
- Hahn, L. C., Oliva, A. A., Jemcov, A., Morris, S. C. (In Press). Adaptive Control Volume Model for Predicting Pseudoshock Outlet Characteristics. Journal of Propulsion & Power.
- Hahn, L. C., Lax, P. A., Szczudlak, J. D., Leonov, S. B., Morris, S. C. Unsteady Pseudoshock Interaction with Fully Passive Bleed Slots. Aerospace Science & Technology, 117 (2026) 1-15. https://doi.org/10.1016/j.ast.2026.112261
- Hahn, L. C., Lax, P., Morris, S. C., Leonov, S. B. (2026). Transient Effect of Passive Bleed Slots on a Propagating Shock Train. In AIAA SCITECH 2026 Forum (p. 2192). https://doi.org/10.2514/6.2026-2192
- Hahn, L. C., Lax, P. A., Morris, S. C., Leonov, S. B., Ombrello, T. M., Braun, E. L., & McGann, B. J. (2026). Control of shock train structure in isolator by electrical discharge. AIAA Journal, 64(5), 2457-2469. https://doi.org/10.2514/1.J065811
- Hahn, L. C. (2025). Pseudoshock Morphology and Dynamics Under Active and Passive Flow Control. University of Notre Dame. Thesis. https://doi.org/10.7274/30681464.v1
- Hahn, L. C., Lax, P., Morris, S. C., Leonov, S. B. (2025). Pressure Gradient Reduction in a Supersonic Isolator Using a Plasma Array. In AIAA SCITECH 2025 Forum (p. 0334). https://doi.org/10.2514/6.2025-0334
- Hahn, L. C., Lax, P. A., Morris, S. C., Leonov, S. B. (2024). Interaction of the Shock Train Leading Edge and Filamentary Plasma in a Supersonic Duct. Fluids, 9(12), 291. https://doi.org/10.3390/fluids9120291
