This review highlights the profound and unexpected ways in which viscosity varying in
space and time can affect flow. The most striking manifestations are through alterations of …

Hypersonic boundary layer (BL) transition generates a significant increase in viscous drag
and heat flux, which leads to severe restrictions on the performance and thermal protection …

We investigate if neural operators can predict the linear evolution of instability waves in high-
speed boundary layers. To this end, we extend the design of the DeepOnet to ensure …

The basic problems of transition in both incompressible and compressible boundary layers
are reviewed. Flow structures in low-speed transitional and developed turbulent boundary …

Vortical flows are flows with vortices as their skeleton structures. Vortices are seen
everywhere in our universe and on the earth: from spiral galaxies, atmospheric and oceanic …

Turbulence is a universal form of fluid motion. It is the key issue in fluid mechanics. Very
recently, it has become a bottleneck in some key engineering research of national …

Abstract Space–time scale-resolved diagnostic and computational campaigns routinely
produce high-fidelity multi-disciplinary truth-model quality datasets for complex …

The effects of an alternative permeable material on the hypersonic boundary layer transition
are investigated. The new permeable material is shown to be effective in delaying the …

A novel optical method is used to measure the high-frequency (up to 3 MHz) density
fluctuations that precede transition to turbulence within a laminar boundary layer in a …

The influence of high-enthalpy effects on hypersonic turbulent boundary layers is
investigated by means of direct numerical simulations (DNS). A quasiadiabatic flat-plate air …