Pressure fluctuations induced by a hypersonic turbulent boundary layer

L Duan, MM Choudhari, C Zhang - Journal of Fluid Mechanics, 2016 - cambridge.org
Direct numerical simulations (DNS) are used to examine the pressure fluctuations generated
by a spatially developed Mach 5.86 turbulent boundary layer. The unsteady pressure field is …

Statistics and dynamics of coherent structures in compressible wall-bounded turbulence

M Yu, SW Dong, XX Yuan, CX Xu - Science China Physics, Mechanics & …, 2024 - Springer
Compressible wall-bounded turbulence is ubiquitously encountered in modern aerospace
and mechanical industries. In this review, we summarize the current state of the literature on …

Characterization of freestream disturbances in conventional hypersonic wind tunnels

L Duan, MM Choudhari, A Chou, F Munoz… - Journal of Spacecraft …, 2019 - arc.aiaa.org
Although low-disturbance (“quiet”) hypersonic wind tunnels are believed to provide more
reliable extrapolation of boundary-layer transition behavior from ground to flight, the …

Supersonic freestream density fluctuations from focused laser differential interferometry and pitot-probe measurements

JM Lawson, MC Neet, JW Hofferth, JM Austin - AIAA journal, 2022 - arc.aiaa.org
Focused laser differential interferometry (FLDI) is used to make freestream density
fluctuation measurements in the von Kármán Gas Dynamics Facility (VKF) Wind Tunnel D at …

Numerical study of acoustic radiation due to a supersonic turbulent boundary layer

L Duan, MM Choudhari, M Wu - Journal of Fluid Mechanics, 2014 - cambridge.org
Direct numerical simulations are used to examine the pressure fluctuations generated by
fully developed turbulence in a Mach 2.5 turbulent boundary layer, with an emphasis on the …

Transitional shockwave/boundary layer interaction experiments in the R2Ch blowdown wind tunnel

M Lugrin, F Nicolas, N Severac, JP Tobeli… - Experiments in …, 2022 - Springer
Transitional shockwave/boundary layer interactions (SBLI) are studied experimentally.
Experiments are conducted on a hollow-cylinder flare model in the R2Ch blowdown facility …

[图书][B] Turbulence measurements in high-speed wind tunnels using focusing laser differential interferometry

MR Fulghum - 2014 - search.proquest.com
Abstract Characterization of freestream disturbances and their effect on laminar boundary
layer transition is of great importance in high-speed wind tunnel testing, where significant …

Development of two-point focused laser differential interferometry for applications in high-speed wind tunnels

A Ceruzzi - 2022 - search.proquest.com
Focused laser differential interferometry (FLDI) and its relative two-point focused laser
differential interferometry (2pFLDI) are completely non-intrusive (ie seedless) optical …

Observation-infused simulations of high-speed boundary-layer transition

DA Buchta, TA Zaki - Journal of Fluid Mechanics, 2021 - cambridge.org
High-speed boundary-layer transition is extremely sensitive to the free-stream disturbances
which are often uncertain. This uncertainty compromises predictions of models and …

Combined experimental and numerical investigation of a hypersonic turbulent boundary layer by means of FLDI and large-eddy simulations

GP Camillo, A Wagner, T Toki, C Scalo - Aerospace, 2023 - mdpi.com
This work investigates a hypersonic turbulent boundary layer over a 7° half angle cone at a
wall-to-total temperature ratio of 0.1, M∞= 7.4 and R e∞ m= 4.2× 10 6 m− 1, in terms of …