Long-lasting emission from femtosecond excitation of nitrogen-based flows shows promise
as a useful mechanism for a molecular tagging velocimetry instrument. The technique …

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 …

This manuscript describes the wide variety of optical measurement techniques for
characterizing the flow in hypersonic wind tunnels. The introduction briefly describes …

In this work, we study the effect of the compression-corner angle on the streamwise turbulent
kinetic energy (sTKE) and structure in Mach 2.8 flow. Krypton tagging velocimetry (KTV) is …

This Letter describes the first, to the best of our knowledge, demonstration of a velocity
measurement by nitric oxide ionization induced flow tagging and imaging (NiiFTI) of a high …

In this work, 10 kHz molecular tagging velocimetry (MTV) in a M∞= 4 Ludwieg tube is done
using a partial pressure of acetone seeded into the facility driver tube. Despite using air as …

The krypton tagging velocimetry (KTV) technique is applied to the turbulent boundary layer
on the wall of the “Mach 3 Calibration Tunnel” at Arnold Engineering Development Complex …

HIGH-SPEED wind tunnels typically rely on pressure and/or temperature measurement and
nozzle-flow calculations to determine the freestream conditions. This practice can require a …

Acetone tagging velocimetry (ATV) with nominally 1% mole fraction acetone seeding was
conducted in a shock-tunnel-generated hypersonic turbulent boundary layer over a hollow …

A 100 kHz krypton (Kr) tagging velocimetry (KTV) technique was demonstrated in a Mach-6
Ludwieg tube using a burst-mode laser-pumped optical parametric oscillator system. The …