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physics.flu-dyn2026
On the role of grazing atmospheric particles in hypersonic boundary-layer receptivity
Sean Dungan, Christoph Brehm
The role of small atmospheric particulates in the initiation of the laminar-turbulent transition is investigated for the HIFLIER vehicle during Mach 6 ascent condition. High-fideli…
physics.flu-dyn2026
Transitional Fluid-Ablation Interactions on a Compression Ramp at Mach 8
Ata Onur Başkaya, Sean Dungan, Stefan Hickel +1
Direct numerical simulations (DNS) are performed for a Mach 8 flow over a 15 degree compression ramp undergoing ablation to analyze fluid-ablation interaction (FAI) effects on inst…
physics.flu-dyn2026
Distributed Roughness-Induced Transition on a Blunt Body at Mach 6: a Numerical Investigation
Sean Dungan, Mateus Braga, Robyn Macdonald +1
Surface roughness significantly impacts transition to turbulence, especially over high-speed, blunt geometries where surface ablation is necessary to mitigate heat loads during atm…