Deflagration-to-Detonation Transition Induced by Hot Jets in a Supersonic Premixed Airstream

被引：19

作者：

Han Xu ^{[1
]}

Zhou Jin ^{[1
]}

Lin Zhi-Yong ^{[1
]}

Liu Yu ^{[1
]}

机构：

[1] Natl Univ Def Technol, Sci & Technol Scramjet Lab, Changsha 410073, Hunan, Peoples R China

来源：

CHINESE PHYSICS LETTERS | 2013年 / 30卷 / 05期

基金：

中国国家自然科学基金;

关键词：

WAVES; INITIATION;

D O I：

10.1088/0256-307X/30/5/054701

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Detonation is initiated through a hot jet in a supersonic premixed mixture of H-2 and air, which is produced by using a air heater. The results show that initiation fails in the low-equivalence-ratio premixed gas. With the increase of equivalence ratio, the hot jet can induce deflagration to detonation transition (DDT) in the premixed mixture, which an indirect initiation of detonation. Further studies show that the DDT process is due to the combined effect of a local hemispherical explosion shock wave, the bow shock, and the flame produced by the hot jet.

引用

页数：3

共 15 条

[1] Alexandrov V G, 1999, Patent Russ. Federation, Patent No. 2157909
[2] Unstable combustion induced by oblique shock waves at the non-attaching condition of the oblique detonation wave
Choi, Jeong-Yeol
Shin, Edward J. -R.
Jeung, In-Seuck
[J]. PROCEEDINGS OF THE COMBUSTION INSTITUTE, 2009, 32 : 2387 - 2396
[3] Giovanni F, 2003, THESIS U TORONTO TOR
[4] Periodic oscillation and fine structure of wedge-induced oblique detonation waves
Gui, Ming-Yue
Fan, Bao-Chun
Dong, Gang
[J]. ACTA MECHANICA SINICA, 2011, 27 (06) : 922 - 928
[5] Initiation and propagation of detonation waves in combustible high speed flows
Ishii, K.
Kataoka, H.
Kojima, T.
[J]. PROCEEDINGS OF THE COMBUSTION INSTITUTE, 2009, 32 : 2323 - 2330
[6] Ivanov M S, 2006, AIAA, V2006, P3578
[7] Jiro K, 2001, AIAA J, V39, P1553
[8] Lee JHS, 2008, DETONATION PHENOMENON, P1, DOI 10.1017/CBO9780511754708
[9] Thrust Vectoring of a Continuous Rotating Detonation Engine by Changing the Local Injection Pressure
Liu Shi-Jie
Lin Zhi-Yong
Sun Ming-Bo
Liu Wei-Dong
[J]. CHINESE PHYSICS LETTERS, 2011, 28 (09)
[10] Morris CI, 1998, TWENTY-SEVENTH SYMPOSIUM (INTERNATIONAL) ON COMBUSTION, VOLS 1 AND 2, P2157

← 1 2 →