Shock-tube development for high-pressure and low-temperature chemical kinetics experiments

Vries, J. de; Aul, Christopher J.; Barrett, Alexander B.; Lambe, Derek E.; Petersen, Eric L.

doi:10.1007/978-3-540-85168-4_26

Cited by 3 publications

(3 citation statements)

References 9 publications

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“…2015; Titova, Kuleshov & Starik, 2011;Cord et al, 2012;de Vries et al, 2009). According to Merchant et al (2015), Reactions 6 (R6) and 7 (R7) serve as two initiation reactions in low-temperature propane oxidation.…”

Section: Reaction Nomentioning

confidence: 99%

Comprehensive study of autoignition characteristics of propane

Farhan

2023

PeerJ Physical Chemistry

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Ignition delay times (IDT) for stoichiometric propane (C3H8) diluted with nitrogen were measured in a shock tube facility under reflected shock wave conditions at pressures ranging from 1 to 10 atm and temperatures between 850 and 1500 K. The experiments were limited to a maximum pressure of 10 atm due to the facility’s constraints. In addition, numerical simulations were conducted using several detailed kinetic mechanisms at pressures from 1 to 30 atm and three equivalence ratios (φ = 0.5, 1, and 2) to provide comparative insights. The results indicated that IDT decreases as pressure increases, with a more significant reduction observed between 1 and 10 atm compared to 10 to 30 atm. While most models exhibited similar trends and minimal discrepancies, the GRI Mech 3.0 mechanism demonstrated a slower prediction of ignition delay times at temperatures below 1250 K. In contrast, the POLIMI model exhibited a relatively faster prediction at temperatures above 1250 K, with the deviation between the two models becoming more pronounced as pressure increased. A comparative analysis revealed that the experimental predictions of propane autoignition behavior were in good agreement with the results obtained using the ARAMCO 3.0 mechanism. To further understand the chemistry governing the autoignition process of C3H8, a sensitivity analysis was performed for a stoichiometric mixture at three distinct temperatures (850 K, 1200 K, and 1550 K).

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Section: Reaction Nomentioning

confidence: 99%

Comprehensive study of autoignition characteristics of propane

Farhan

2023

PeerJ Physical Chemistry

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“…The computational domain represents the entire geometry of the high-pressure shock-tube test facility at the Texas A&M University described in detail by de Vries et al (2007) and Aul (2009). The shock tube consists of a 2.46-m-long driver section with an internal diameter of 7.62 cm and a 4.72-m-long driven section with an internal diameter of 15.24 cm.…”

Section: Computational Domain/gridmentioning

confidence: 99%

“…The shock-tube model was also validated with experimental measurements conducted at the Texas A&M shock-tube facility. The experimental pressure profiles were obtained at a location 1.6 cm from the end-wall using the equipment detailed by de Vries et al (2007) and Aul (2009). Target reflected-shock temperatures and pressures were achieved through the use of Lexan diaphragms (2.5 atm) or aluminum diaphragms (17 atm).…”

Section: Validation Of Shock-tube Model With Experimental Datamentioning

confidence: 99%

A conjugate axisymmetric model of a high-pressure shock-tube facility

Lamnaouer

Kassab

Divo

et al. 2014

International Journal of Numerical Methods for Heat &Amp; Fluid Flow

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Purpose -An axisymmetric shock-tube model of the high-pressure shock-tube facility at the Texas A&M University has been developed. The shock tube is non-conventional with a non-uniform cross-section and features a driver section with a smaller diameter than the driven section. The paper aims to discuss these issues. Design/methodology/approach -Computations were carried out based on the finite volume approach and the AUSM þ flux-differencing scheme. The adaptive mesh refinement algorithm was applied to the time-dependent flow fields to accurately capture and resolve the shock and contact discontinuities as well as the very fine scales associated with the viscous effects. The incorporation of a conjugate heat transfer model enhanced the credibility of the results. Findings -The shock-tube model is validated with simulation of the bifurcation phenomenon and with experimental data. The model is shown to be capable of accurately simulating the shock and expansion wave propagations and reflections as well as the flow non-uniformities behind the reflected shock wave as a result of reflected shock/boundary layer interaction or bifurcation. The pressure profiles behind the reflected shock wave agree with the experimental results. Originality/value -This paper presents one of the first studies to model the entire flow field history of a non-uniform diameter shock tube with a conjugate heat transfer model beginning from the bursting of the diaphragm while simultaneously resolving the fine features of the reflected shock-boundary layer interaction and the post-shock region near the end-wall, at conditions useful for chemical kinetics experiments. An important discovery from this study is the possible existence of hot spots in the end-wall region that could lead to early non-homogeneous ignition events. More experimental and numerical work is needed to quantify the hot spots.

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