Hongkang Liu

Use of a single CO₂ coolant in a Cascade manner for thermal protection of hypersonic vehicles

To address the thermal protection of hot-end components in hypersonic vehicles under extreme high-enthalpy aerodynamic heating, this study proposes and experimentally validates a channel–film combined cooling scheme based on the cascaded use of a single CO₂ coolant. Tests were co...

Unsteady aerodynamics and underbody flow characteristics of high-speed trains with bogie covers at 400 km/h

Although high-speed train (HST) bogie covers effectively reduce aerodynamic drag, they raise safety concerns due to lift-induced oscillations caused by unsteady underbody flow. This study investigates the effects of various bogie covering structures on aerodynamic load pulsations...