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Rarefaction effects on hypersonic boundary-layer stability
Near-space hypersonic vehicles could experience both continuous and rarefied flow regimes during the flight through atmosphere. The rarefaction...
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Turbulent Transition Control Using Porous Surfaces in Hypersonic Boundary Layer
Hypersonic boundary layer on porous surfaces is simulated to investigate the effect of porous surfaces on the transition process. The fundamental...
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Hypersonic boundary-layer instability characterization and transition downstream of distributed roughness
The ablation of thermal protection systems in hypersonic vehicles would generate randomly distributed surface roughness, which prominently influences...
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Receptivity of Mack modes to localized unsteady blowing and suction in a chemical non-equilibrium hypersonic boundary layer
This paper studies the local receptivity of the Mack-mode instability to localized unsteady blowing and suction (UBS) in a chemical non-equilibrium...
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Direct-Numerical Simulation with the Stability Theory for Turbulent Transition in Hypersonic Boundary Layer
Laminar-to-turbulent transition in hypersonic boundary layer is numerically investigated using the direct-numerical simulation (DNS) method combined...
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Flow structures and unsteadiness in hypersonic shock wave/turbulent boundary layer interaction subject to steady jet
Direct numerical simulations of Mach 6 hypersonic flow over a 34° compression corner subject to steady jet are conducted. Distributions of skin...
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Notes on the hypersonic boundary layer transition
A brief discussion is given in this note to clarify the transition path of the hypersonic boundary layer. The first mode plays an important role in...
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Research Progress of hypersonic boundary layer transition control experiments
Hypersonic boundary layer transition is a hot yet challenging problem restricting the development and breakthrough of hypersonic aerodynamics. In...
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Numerical studies on uncontrolled and controlled shock wave/boundary layer interactions in hypersonic intake
Understanding the phenomenon of Shock Wave/Boundary Layer Interaction (SBLI) is critical in develo** hypersonic aircraft as it is associated with...
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Stabilization of hypersonic boundary layer by combining micro-blowing and a porous coating
The extensive involvement of blowing in ablation and transpiration cooling directly influences the hypersonic boundary layer (HBL) transition. This...
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Experimental study of bluntness effects on hypersonic boundary-layer transition over a slender cone using surface mounted pressure sensors
In this work, we studied the bluntness effect on the hypersonic boundary-layer transition over a slender cone at Mach 6 with interchangeable tips in...
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Correlated off-body density fluctuations and surface heating in hypersonic boundary layer transition
Measurements of surface heat flux via IR thermography and boundary layer density fluctuations using a variation of focused laser differential...
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Attenuation of hypersonic second-mode boundary-layer instability with an ultrasonically absorptive silicon-carbide foam
Unsteady surface pressure measurements have been carried out on a flat-plate test article in the Air Force Research Laboratory’s Mach-6 Ludwieg Tube...
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Progress in flight tests of hypersonic boundary layer transition
Boundary layer transition (BLT) can cause a sharp rise in heat flux and skin friction, which can seriously affect the flight performance and safety...
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Matched asymptotic shock-layer analysis of the interaction between a planar viscous-hypersonic boundary layer and a thin inviscid layer
AbstractA compressible boundary-layer flow over a flat plate with sharp leading edge is studied in the hypersonic limit. The interaction between the...
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Improvement of the eN method for predicting hypersonic boundary-layer transition in case of modal exchange
In hypersonic boundary layers, a disturbance may first manifest itself as a first mode wave and subsequently evolves into a second mode wave. Under...
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A symmetry-based length model for characterizing the hypersonic boundary layer transition on a slender cone at moderate incidence
The hypersonic boundary layer (HBL) transition on a slender cone at moderate incidence is studied via a symmetry-based length model: the SED-SL...
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Profiles of streamwise velocity and fluctuations in a hypersonic turbulent boundary layer using acetone tagging velocimetry
Acetone tagging velocimetry (ATV) with nominally 1% mole fraction acetone seeding was conducted in a shock-tunnel-generated hypersonic turbulent...
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Effects of Thermo-chemical Models on Linear Stability Analysis of Chemically Reacting Hypersonic Boundary Layers
The effects of thermo-chemical models and assumptions on stability analysis is investigated using the linear stability theory (LST) framework. The...
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On the drag reduction mechanism of hypersonic turbulent boundary layers subject to heated wall blowing
Turbulence drag reduction is of great significance for the range increase of hypersonic flight vehicles. The proposed velocity-temperature coupling...
