Modes of mild ignition in shock tubes: Origins and classification

被引：16

作者：

Kiverin, Alexey D. ^{[1
]}

Minaev, Kirill O. ^{[1
]}

Yakovenko, Ivan S. ^{[1
]}

机构：

[1] Russian Acad Sci, Joint Inst High Temp, Izhorskaya St 13 Bd 2, Moscow 125412, Russia

来源：

COMBUSTION AND FLAME | 2020年 / 221卷

关键词：

Shock tube; Ignition; Mild ignition; Temperature non-uniformity; Boundary layer; Flow development; HYDROGEN-AIR MIXTURES; DELAY TIMES; DETONATION; MECHANISM; WAVE; WEAK; TEMPERATURES; TRANSITION;

D O I：

10.1016/j.combustflame.2020.08.013

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The paper analyses numerically the scenarios of ignition kernels formation in the shock tube in the intermediate temperature range. Three modes of mild ignition are distinguished among which are: ignition related to the shear heating in the developed boundary layer, ignition due to the shear heating in the re-circulation zone behind the reflected shock and ignition in the central region of the tube due to the axial compression. All three modes define short ignition delays at low temperatures compared to the ideal shock-tube values. Moreover, it is shown that the gas-dynamic mechanisms responsible for additional local heating of the test mixture provide close rates of heating. As a result, all the data on ignition delays fall in a certain range defined by the mixture composition and pressure, independent on the particular mode of mild ignition. (C) 2020 The Combustion Institute. Published by Elsevier Inc. All rights reserved.

引用

页码：420 / 428

页数：9

共 48 条

[1] Autoignition of propane behind shock waves [J].

Agafonov, G. L. ;

Tereza, A. M. .

RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B, 2015, 9 (01) :92-103

[2]

Asahara M, 2014, SCI TECHNOL ENERG MA, V75, P50

[3]

Bazhenova T., 1959, 7 S INT COMB, P866

[4] Gas dynamic features of self ignition of non diluted fuel/air mixtures at high pressure [J].

Blumenthal, R ;

Fieweger, K ;

Komp, KH ;

Adomeit, G .

COMBUSTION SCIENCE AND TECHNOLOGY, 1996, 113 :137-166

[5] Analysis of transient combustion with the use of contemporary CFD techniques [J].

Bykov, V ;

Kiverin, A. ;

Koksharov, A. ;

Yakovenko, I .

COMPUTERS & FLUIDS, 2019, 194

[6] Syngas combustion kinetics and applications [J].

Chaos, Marcos ;

Dryer, Frederick L. .

COMBUSTION SCIENCE AND TECHNOLOGY, 2008, 180 (06) :1053-1096

[7] Interpreting shock tube ignition data [J].

Davidson, DF ;

Hanson, RK .

INTERNATIONAL JOURNAL OF CHEMICAL KINETICS, 2004, 36 (09) :510-523

[8] Quantum Phenomena in Ignition and Detonation at Elevated Density [J].

Drakon, A. V. ;

Emelianov, A. V. ;

Eremin, A. V. ;

Gurentsov, E. V. ;

Petrushevich, Yu. V. ;

Starostin, A. N. ;

Taran, M. D. ;

Fortov, V. E. .

PHYSICAL REVIEW LETTERS, 2012, 109 (18)

[9] Ignition of syngas/air and hydrogen/air mixtures at low temperatures and high pressures: Experimental data interpretation and kinetic modeling implications [J].

Dryer, Frederick L. ;

Chaos, Marcos .

COMBUSTION AND FLAME, 2008, 152 (1-2) :293-299

[10] INITIATION OF DETONATION BY STEADY PLANAR INCIDENT SHOCK-WAVES [J].

EDWARDS, DH ;

THOMAS, GO ;

WILLIAMS, TL .

COMBUSTION AND FLAME, 1981, 43 (02) :187-198

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