3 citations · 3 across the 2 of their papers we have counts for
4 papers · 1 filter
Stabilisation of second Mack mode in hypersonic boundary layers through spanwise non-uniform surface temperature distribution
L. Boscagli, G. Rigas, O. Marxen +1
The extreme heat fluxes characteristic of hypersonic flows significantly limit the flight envelope of hypersonic vehicles. The role of hydrodynamic instability and the onset of lam…
Control of deterministic breakdown to turbulence of hypersonic boundary layer with spanwise non-uniform surface temperature
L. Boscagli, G. Rigas, P. J. K. Bruce +1
Direct Numerical Simulation (DNS) of a Mach 6 boundary layer over a flat plate is performed to assess the effect of spanwise non-uniform surface temperature on breakdown to turbule…
Spectral analysis of attached and separated turbulent flows over a Gaussian-shaped bump
Roman Klopsch, Lukas M. Fuchs, Georgios Rigas +2
We investigate the broadband turbulent dynamics of attached and separated flows over a Gaussian bump, focusing on the origin of low-frequency coherent structures. The analysis comb…
Real-time reinforcement learning for turbulent state-dependent control in a bluff-body wake
Junjie Zhang, Chengwei Xia, Xianyang Jiang +2
Controlling turbulent dynamics remains a major challenge because of its chaotic, multi-scale dynamics, which strongly influence the performance of many fluid systems. Here we repor…