Kyle Daniel
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View article: Continuum laser absorption spectroscopy of C2(a3Πu) in a sublimating cloud of carbon black
Continuum laser absorption spectroscopy of C2(a3Πu) in a sublimating cloud of carbon black Open
A direct optical absorption diagnostic has been developed for rotationally resolved measurements of diatomic carbon (a 3 Π u →d 3 Π g (0,0) and (1,1)) at a repetition rate of 525 kHz and resolution of 7.3 pm over the range of 511.1–514.1 n…
View article: Nitric Oxide Molecular Tagging Velocimetry of a Free-Flight Model in a Reflected Shock Tunnel
Nitric Oxide Molecular Tagging Velocimetry of a Free-Flight Model in a Reflected Shock Tunnel Open
Nitric oxide molecular tagging velocimetry (NO MTV) is used to characterize the wake behind a free-flight spherical model in the test section of a free-piston reflected shock tunnel using a burst-mode laser operated at 100 kHz. A novel (to…
View article: Drop Interactions with the Conical Shock Structure Generated by a Mach 4.5 Projectile
Drop Interactions with the Conical Shock Structure Generated by a Mach 4.5 Projectile Open
This work presents measurements of liquid drop deformation and breakup time behind approximately conical shock waves and evaluates the predictive capabilities of low-order models and correlations developed using planar shock experiments. A…
View article: Near-IR Laser Absorption Measurements of Atomic Nitrogen, Oxygen, and Carbon Concentrations in Shock-Heated Air
Near-IR Laser Absorption Measurements of Atomic Nitrogen, Oxygen, and Carbon Concentrations in Shock-Heated Air Open
A tunable infrared laser absorption diagnostic of diatomics and atoms at 100 kHz repetition rate has been developed for measurements in shocked-heated air. The diagnostic utilizes two microelectromechanical system (MEMS) vertical cavity su…
View article: Laser Absorption Spectroscopy Measurements of High Pressure and Temperature Aluminum Combustion in a Shock Tube
Laser Absorption Spectroscopy Measurements of High Pressure and Temperature Aluminum Combustion in a Shock Tube Open
This study presents measurements on the combustion of nominally 20 micron diameter particles burning in air at elevated temperature (3600 +/- 150K) and pressures (8 – 63 atm) in Sandia’s High-Temperature Shock Tube (HST) facility. Measurem…
View article: High Temperature Gladstone-Dale Coefficient Measurements in a Free-Piston Shock Tube
High Temperature Gladstone-Dale Coefficient Measurements in a Free-Piston Shock Tube Open
View Video Presentation: https://doi.org/10.2514/6.2023-0225.vid Accurately measuring aero-optical properties of non-equilibrium gases is critical for characterizing compressible flow dynamics and plasmas. At thermochemical non-equilibrium…
View article: Shock-Particle Curtain Interactions at High Mach Number
Shock-Particle Curtain Interactions at High Mach Number Open
Shock-particle interactions at elevated Mach numbers are studied using the Sandia free-piston High-Temperature Shock Tube (HST). Like previous studies in a lower-strength facility, the particle curtain was comprised of 100-micron glass at …
View article: Shock Induced Particle Curtain Dispersion: Asymptotic Drag Law Scaling Formulations and Relationship to Streamwise Pressure Difference Models
Shock Induced Particle Curtain Dispersion: Asymptotic Drag Law Scaling Formulations and Relationship to Streamwise Pressure Difference Models Open
Here we examine models for particle curtain dispersion using drag based formalisms and their connection to streamwise pressure difference closures. Focusing on drag models, we specifically demonstrate that scaling arguments developed in De…
View article: High-Speed Diagnostic and Simulation Capabilities for Reacting Hypersonic Reentry Flows (LDRD Final Report)
High-Speed Diagnostic and Simulation Capabilities for Reacting Hypersonic Reentry Flows (LDRD Final Report) Open
High-enthalpy hypersonic flight represents an application space of significant concern within the current national-security landscape. The hypersonic environment is characterized by high-speed compressible fluid mechanics and complex react…
View article: Quantum-cascade-laser-absorption-spectroscopy diagnostic for temperature, pressure, and NO <i>X</i> <sup>2</sup> <i>Π</i> <sub>1/2</sub> at 500 kHz in shock-heated air at elevated pressures
Quantum-cascade-laser-absorption-spectroscopy diagnostic for temperature, pressure, and NO <i>X</i> <sup>2</sup> <i>Π</i> <sub>1/2</sub> at 500 kHz in shock-heated air at elevated pressures Open
The design, validation, and application of a quantum-cascade-laser-absorption-spectroscopy diagnostic for measuring gas temperature, pressure, and nitric oxide (NO) in high-temperature air are presented. A distributed-feedback quantum-casc…
View article: Coaxial laser absorption and optical emission spectroscopy of high-pressure aluminum monoxide
Coaxial laser absorption and optical emission spectroscopy of high-pressure aluminum monoxide Open
This work advances laser absorption spectroscopy with measurements of aluminum monoxide (AlO) temperature and column density in extreme pressure ( P > 60 bar) and temperature ( T > 4000 K) environments. Measurements of the AlO A 2 Π i – X …
View article: Aluminum Combustion in a Shock Tube at High Pressure
Aluminum Combustion in a Shock Tube at High Pressure Open
View Video Presentation: https://doi.org/10.2514/6.2022-0637.vid This work demonstrates a laser absorption diagnostic capable of measuring the temperature and column density of aluminum monoxide (AlO) at 100 kHz. This diagnostic was fielde…
View article: Design and Characterization of the Sandia Free-Piston Reflected Shock Tunnel
Design and Characterization of the Sandia Free-Piston Reflected Shock Tunnel Open
A new reflected shock tunnel has been commissioned at Sandia capable of generating hypersonic environments at realistic flight enthalpies. The tunnel uses an existing free-piston driver and shock tube coupled to a conical nozzle to acceler…