&lt;title&gt;Particle motion through an oblique shock wave&lt;/title&gt;

Tedeschi, G.; Elena, M.; Gouin, Henri

doi:10.1117/12.150514

Cited by 6 publications

(5 citation statements)

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“…The Lagrangian tracking algorithm is tested by considering the relaxation time of particles passing through a weak shock. This is simulated for conditions similar to the experimental conditions presented by Tedeschi et al 32 Here, particles with a diameter of 1.4µm are entrained in a M = 2.3 air flow, with a stagnation pressure of 0.5 atm. and a stagnation temperature of 303K.…”

Section: Particle Motion Through a Shockmentioning

confidence: 93%

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Simulation of Detonation Propagation in Turbulent Gas-Solid Reactive Mixtures

Génin¹,

Fryxell²,

Menon³

2005

41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference &Amp;amp; Exhibit

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The present study focuses on the simulation of highly reactive two-phase flows associated with detonations. A hybrid scheme, that combines a high-order shock-capturing method and a second/fourth-order accurate, low dissipation scheme 1 is first validated by simulating blast wave discharges and shock-vortex interaction. The Large-Eddy Simulation model used in the present formulation is considered afterward in a fundamental study of shock-turbulence interaction. The solid phase tracking algorithm is then validated in supersonic environment. Finally, a detonative mixture composed of H2/O2/Ar, similar to an experimental configuration, 2 is simulated with and without the presence of solid aluminum particles. The explicit role of the particles in this environment is considered, and the presence of a Double − F ronted Detonation is analyzed.

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Section: Particle Motion Through a Shockmentioning

confidence: 93%

“…It can be seen that the response of the particles to the sudden velocity change is well simulated. As noted in Tedeschi et al, 32 the formulation of the drag coefficient used in this study:…”

Section: Particle Motion Through a Shockmentioning

confidence: 99%

Simulation of Detonation Propagation in Turbulent Gas-Solid Reactive Mixtures

Génin¹,

Fryxell²,

Menon³

2005

41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference &Amp;amp; Exhibit

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“…Several studies were performed [45,46,47,48], which determined that for smaller particles (order of size: 0.1-100 µm) and high flow velocities, all but the drag force were insignificant. The drag force acting on the particle can be expressed as…”

Section: Drag Coefficientmentioning

confidence: 99%

“…The experiments performed by Thomas et al [87,45] and Tedeschi et al [70,47,46] were used to validate the model velocity prediction.…”

Section: Velocitymentioning

confidence: 99%

A drag coefficient model for Lagrangian particle dynamics relevant to high-speed flows

Davuluri

Bailey

Tagavi

et al. 2021

International Journal of Heat and Fluid Flow

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“…The relaxation time of the particles is quantified using an oblique shock wave test which has also been applied in the previous literature [4,17,32,33]. The steep velocity gradient across the shock wave creates a velocity difference between the tracer particles and the fluid.…”

Section: Calculation Of the Relaxation Timementioning

confidence: 99%

Nanostructured tracers for laser-based diagnostics in high-speed flows

Ghaemi

Schmidt‐Ott

Scarano

2010

Meas. Sci. Technol.

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The potential application of aggregates of nanoparticles for high-speed flow diagnostics is investigated. Aluminum nanoparticles around 10 nm in diameter are produced by spark discharge in argon gas. Through rapid coagulation and oxidation, aggregates of small effective density are formed. They are characterized by microscopy and their aerodynamics and optical properties are theoretically evaluated. The performance of the aggregates is experimentally investigated across an oblique shock wave in a supersonic wind tunnel of 3 × 3 cm 2 cross-section at Mach 2. Particle image velocimetry is used to quantify the time response of the aggregates. The investigations are also carried out on compact titanium agglomerates to provide a base for comparison. The results yield a relaxation time of 0.27 μs for the nanostructured aluminum aggregates, which is an order of magnitude reduction with respect to the compact titanium nanoparticles. This work demonstrates the applicability of nanostructured aggregates for laser-based diagnostics in supersonic and hypersonic flows.

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<title>Particle motion through an oblique shock wave</title>

Cited by 6 publications

References 0 publications

Simulation of Detonation Propagation in Turbulent Gas-Solid Reactive Mixtures

Simulation of Detonation Propagation in Turbulent Gas-Solid Reactive Mixtures

A drag coefficient model for Lagrangian particle dynamics relevant to high-speed flows

Nanostructured tracers for laser-based diagnostics in high-speed flows

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