2018
DOI: 10.1016/j.combustflame.2018.09.015
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Abstract: This study used self-luminous high-speed photography to visualize quasi-detonation propagation and deflagration-to-detonation transition (DDT) in a transparent round tube equipped with repeating orifice plates. Experiments were conducted in a combustion channel consisting of a 3.16 m square channel with a 7.6 cm by 7.6 cm cross-section connected to a 1.55 m cylindrical channel filled with orifice plates. Rectangular 'fence-type' obstacles were installed on the top and bottom of the square channel with a 3.8 cm… Show more

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Cited by 23 publications
(4 citation statements)
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“…As detailed by Peraldi et al (1988), a combustion front terminal velocity between the speed of sound of the products and the CJ detonation velocity is referred to as a "quasidetonation." The severe detonation velocity deficit (relative to the CJ value) observed in the data is due to the repeated detonation failure and reinitiation caused by the interaction of the detonation wave and the orifice plates (Rainsford and Ciccarelli, 2017). Quasi-detonation propagation in the second half of the tube was observed for mixtures with Ø = 1.1-1.3, at 101 kPa for both 100°C and 200°C.…”
Section: Resultsmentioning
confidence: 68%
See 1 more Smart Citation
“…As detailed by Peraldi et al (1988), a combustion front terminal velocity between the speed of sound of the products and the CJ detonation velocity is referred to as a "quasidetonation." The severe detonation velocity deficit (relative to the CJ value) observed in the data is due to the repeated detonation failure and reinitiation caused by the interaction of the detonation wave and the orifice plates (Rainsford and Ciccarelli, 2017). Quasi-detonation propagation in the second half of the tube was observed for mixtures with Ø = 1.1-1.3, at 101 kPa for both 100°C and 200°C.…”
Section: Resultsmentioning
confidence: 68%
“…Deflagration-todetonation transition (DDT) requires that the flame accelerates to a velocity on the order of the speed of sound of the combustion products, and that the orifice plate diameter, d, must be larger than the mixture's detonation cell size, i.e., d/λ > 1 (Peraldi et al, 1988). Detonation initiation typically occurs as the result of the interaction of the lead shock wave with the obstacle face, or the tube wall (Rainsford and Ciccarelli, 2017). Ciccarelli and Cross (2016) studied the influence of the orifice blockage ratio (BR) on the DDT limit (i.e., minimum mixture composition resulting in DDT).…”
Section: Introductionmentioning
confidence: 99%
“…A quasi-detonation (QD) can be described as a detonation with a velocity noticeably less than the C-J value and an unusual structure [7,41,42]. Many studies have investigated QD propagation in obstructed tubes filled with repeated orifice plate obstacles, wherein the dimensions of the orifice diameter and spacing are comparable to the tube diameter [43][44][45][46][47][48][49][50][51]. In such configurations, the detonation essentially undergoes a series of diffraction and reflection from the obstacles and tube wall as it propagates.…”
Section: Quasi-detonationsmentioning
confidence: 99%
“…Simpson and Ranade [7] presented results of computational investigation into cavitation in different orifice designs over a range of operating conditions. Rainsford et al [8] presented highspeed photography to visualize fast-flame and detonation propagation through a transparent round tube equipped with repeating orifice plates, in stoichiometric hydrogenoxygen mixtures at initial pressures up to 60 kPa. Yu et al [9] presented experimental and numerical research on the internal flow and spray behaviors with biodiesel for elliptical orifice with large aspect ratio and circular orifice of diesel nozzles, under high injection pressure and backpressure conditions.…”
Section: Introductionmentioning
confidence: 99%