The recent progress in high-speed (≥ 100k H z) laser diagnostics for hypersonic flows is
reviewed. Owing to the ultrahigh flow speed, a laser frequency of 100 kHz or higher is …

TRANSITION from laminar to turbulentflow in a boundary layer is important when trying to
quantify surface heat transfer and drag for supersonic or hypersonic flight vehicles …

在过去15 年间, 随着高超声速技术快速发展, 边界层转捩也得到了更加广泛和深入的研究.
人们对流向行波失稳, 横流失稳, Görtler 涡失稳等转捩机理取得了较深刻认识 …

Nitric oxide planar laser-induced fluorescence (NO PLIF) imaging at repetition rates as high
as 1MHz is demonstrated in the NASA Langley 31 in. Mach 10 hypersonic wind tunnel …

We study the transition of a Mach 6 laminar boundary layer due to an isolated cylindrical
roughness element using large-scale direct numerical simulations (DNS). Three flow …

Shock-wave/boundary-layer interactions (SWBLIs) are critical phenomena in the design of
high-speed vehicles as they exhibit inherent unsteadiness that can damage airframes and …

The transition of the boundary-layer state from laminar to turbulent on a 7° sharp cone in
Mach 10 flow is measured using several high-speed optical diagnostics capable of time …

THE ability to perform quantitative velocity measurements in a hypersonic flow can be
complicated by the extreme dynamic and thermodynamic conditions present in hypersonic …

We study and compare instability mechanisms of a Mach 5.65 laminar boundary layer
tripped by an isolated diamond-shaped trip and by an array of diamond-shaped trips using …

Boundary layer transition over isolated roughness elements is investigated in the
incompressible flow regime using tomographic PIV. Four different geometries (cylinder …