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Hypersonic wake velocity measurements using acetone molecular tagging velocimetry

Journal Article · · Applied Optics
DOI:https://doi.org/10.1364/AO.546880· OSTI ID:2573496

Molecular tagging velocimetry, a minimally intrusive laser diagnostic, was used to find quantitative off-body velocity measurements in the wake of both strut-mounted and free-flight spheres in hypersonic flow. Acetone gas seeded in the flow was excited using the fourth harmonic of a pulse-burst Nd:YAG laser. The experimental tests were validated and compared to simulations using a continuous Galerkin flow solver and an adaptive mesh refinement process. Near the centerline in the wake of the sphere, velocities between −105 and 65 m/s were observed due to reverse flow in the viscous shear layer. Similarly, the simulated data showed negative velocity values in the shear layer region. Outside of the shear layer, average velocities of 730 m/s were observed in both the experimental and simulated results. The overall average uncertainty for the strut-mounted and free-flight cases was estimated to have an accuracy of ±4% (±35.5m/s or 4.9%). In conclusion, this non-intrusive technique provides a velocity map of the wake behind a sphere under hypersonic conditions.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE; National Aeronautics and Space Administration (NASA)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
2573496
Alternate ID(s):
OSTI ID: 2525958
Journal Information:
Applied Optics, Journal Name: Applied Optics Journal Issue: 8 Vol. 64; ISSN 1559-128X; ISSN 2155-3165
Publisher:
Optical Society of AmericaCopyright Statement
Country of Publication:
United States
Language:
English

References (61)

Comparison of molecular tagging velocimetry data and direct simulation Monte Carlo simulations in supersonic micro jet flows journal February 2003
Planar velocity measurements of a two-dimensional compressible wake journal February 2003
Two-component Doppler-shift fluorescence velocimetry applied to a generic planetary entry probe model journal December 2009
Comparison of velocity and temperature measurements with simulations in a hypersonic wake flow journal March 2011
Study on supersonic rectangular microjets using molecular tagging velocimetry journal April 2014
Krypton tagging velocimetry in a turbulent Mach 2.7 boundary layer journal April 2016
10 kHz molecular tagging velocimetry in a Mach 4 air flow with acetone vapor seeding journal May 2022
Profiles of streamwise velocity and fluctuations in a hypersonic turbulent boundary layer using acetone tagging velocimetry journal June 2023
PLIF imaging of mean temperature and pressure in a supersonic bluff wake journal April 1998
Micro molecular tagging velocimetry for analysis of gas flows in mini and micro systems journal November 2013
Measurements of diffusion coefficient and kinetic diameter of acetone vapor via molecular tagging journal August 2024
Study on the particle traceability in transonic and supersonic flows using molecular tagging velocimetry journal April 2015
Roughness parameters journal April 2002
Molecular tagging velocimetry by direct phosphorescence in gas microflows: Correction of Taylor dispersion journal May 2017
Molecular tagging velocimetry for confined rarefied gas flows: Phosphorescence emission measurements at low pressure journal December 2018
Experimental studies of stability and transition in high-speed wakes journal August 1999
Unsteady flow organization of compressible planar base flows journal July 2007
Effect of a rapid expansion on the development of compressible free shear layers journal January 1995
Unseeded velocimetry in nitrogen for high-pressure cryogenic wind tunnels: part II. Picosecond-laser tagging journal October 2018
Planetary-Entry gas Dynamics journal January 1999
Hypersonic N2 boundary layer flow velocity profile measurements using FLEET journal April 2021
Hydroxyl tagging velocimetry in a supersonic flow over a cavity journal November 2005
High-repetition-rate krypton tagging velocimetry in Mach-6 hypersonic flows journal March 2022
Femtosecond laser electronic excitation tagging for quantitative velocity imaging in air journal January 2011
Multi-point FLEET velocimetry in a Mach 4 Ludwieg tube using a diffractive optical element journal January 2024
Krypton tagging velocimetry of an underexpanded jet journal January 2015
100 kHz PLEET velocimetry in a Mach-6 Ludwieg tube journal January 2020
Velocity measurements in a hypersonic flow using acetone molecular tagging velocimetry journal November 2022
Velocity measurements by vibrational tagging and fluorescent probing of oxygen journal January 1987
Simultaneous velocity and temperature measurements in gaseous flow fields using the VENOM technique journal January 2011
Seedless velocimetry at 100  kHz with picosecond-laser electronic-excitation tagging journal January 2017
Burst-mode velocimetry of hypersonic flow by nitric oxide ionization induced flow tagging and imaging journal January 2024
Heat-Shield Ablation Visualized Using Naphthalene Planar Laser-Induced Fluorescence journal March 2017
Velocity Profile Measurements in Hypersonic Flows Using Sequentially Imaged Fluorescence-Based Molecular Tagging journal September 2011
Detached-Eddy Simulations of Hypersonic Capsule Wake Flow journal January 2015
Nonintrusive Freestream Velocity Measurement in a Large-Scale Hypersonic Wind Tunnel journal October 2017
Femtosecond Laser Electronic Excitation Tagging Velocimetry in a Mach Six Quiet Tunnel journal February 2021
Femtosecond Laser Electronic Excitation Tagging Velocimetry in a Mach 6 Ludwieg Tube journal June 2022
Molecular Tagging Velocimetry Measurements in Supersonic Microjets journal June 2002
Flow-Tagging Velocimetry for Hypersonic Flows Using Fluorescence of Nitric Oxide journal February 2003
Supersonic base flow experiments in the near wake of a cylindrical afterbody journal January 1994
Unsteady Hypersonic wake Behind Blunt Bodies journal October 1963
Hypersonic wakes and trails journal March 1964
Studies of the luminous hypersonic wake journal October 1964
Analysis of laminar near-wake hypersonic flows journal November 1995
Near wake of a blunt body at hypersonic speeds journal June 1965
Near wake flow field measurements. journal November 1965
An experimental investigation of the near wake of a slender cone at M infinity equal 8 and 12. journal January 1966
A review of hypersonic wake studies. journal April 1966
Aerodynamic characteristics of hypersonic wakes. journal September 1967
Chemiluminescent radiation from the far wake of hypersonic spheres. journal November 1967
The far wake behind cylinders at hypersonic speeds. I. journal December 1967
A new theoretical solution of the laminar, hypersonic near wake. journal December 1967
Experimental studies on the lip shock. journal February 1968
Far wake behind cylinders at hypersonic speeds. II. journal February 1968
Experimental studies of a laminar hypersonic cone wake. journal September 1969
Blunt body near-wake flow field at Mach 6 conference June 1996
Acetone-condensation Nano-particle Image Velocimetry in A Supersonic Boundary Layer conference January 2019
FLEET and PLIF velocimetry within a Mach 10 hypersonic air flow conference January 2024
Hypersonic Wake Velocity Measurements Using Acetone Molecular Tagging Velocimetry conference July 2024
Flow Characterization of the UTSA Hypersonic Ludwieg Tube journal May 2023

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