| CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
|
|
|
|
Numerical Investigation on the Propagation Mechanism of Steady Cellular Detonations in Curved Channels |
| LI Jian1,2, NING Jian-Guo1**, ZHAO Hui1, HAO Li3, WANG Cheng1 |
1State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081
2Department of Mechanical Engineering, McGill University, Montreal H3A2K6, Canada
3School of Science, Beijing University of Civil Engineering and Architecture, Beijing 100044
|
|
| Cite this article: |
|
LI Jian, NING Jian-Guo, ZHAO Hui et al 2015 Chin. Phys. Lett. 32 048202 |
|
|
|
|
Abstract The propagation mechanism of steady cellular detonations in curved channels is investigated numerically with a detailed chemical reaction mechanism. The numerical results demonstrate that as the radius of the curvature decreases, detonation fails near the inner wall due to the strong expansion effect. As the radius of the curvature increases, the detonation front near the inner wall can sustain an underdriven detonation. In the case where detonation fails, a transverse detonation downstream forms and re-initiates the quenched detonation as it propagates toward the inner wall. Two kinds of propagation modes exist as the detonation is propagating in the curved channel. One is that the detonation fails first, and then a following transverse detonation initiates the quenched detonation and this process repeats itself. The other one is that without detonation failure and re-initiation, a steady detonation exists which consists of an underdriven detonation front near the inner wall subject to the diffraction and an overdriven detonation near the outer wall subject to the compression.
|
|
|
Received: 05 December 2014
Published: 30 April 2015
|
|
| PACS: |
82.40.Fp
|
(Shock wave initiated reactions, high-pressure chemistry)
|
| |
47.40.Nm
|
(Shock wave interactions and shock effects)
|
|
|
|
|
|
[1] Lee J H S 2008 The Detonation Phenomenon (Cambridge: Cambridge University Press)
[2] Hishida M, Fujiwara T and Wolanski P 2009 Shock Waves 19 1
[3] Falempin F and Daniau E 2008 AIAA J. 2008 2679
[4] Nettleton M A 2002 Shock Waves 12 3
[5] Thomas G O and Williams R L 2002 Shock Waves 11 481
[6] Deiterding R 2009 Comput. Struct. 87 769
[7] Kudo Y, Nagura Y, Kasahara J, Sasamoto Y and Matsuo A 2011 Proc. Combust. Inst. 33 2319
[8] Nakayama H, Kasahara J, Matsuo A and Funaki I 2013 Proc. Combust. Inst. 34 1939
[9] Frolov S M, Aksenov V S and Shamshin I O 2007 J. Loss Prev. Process Ind. 20 501
[10] Liang Z, Curran T and Shepherd J E 2006 Structural Response to Detonation Loading in Piping Components (Pasadena: California Institute of Technology Report)
[11] Kennedy C A and Carpenter M H 2003 Appl. Numer. Math. 44 1
[12] Han W H, Wang C and Ning J G 2012 Chin. Phys. Lett. 29 108201
[13] Han G L, Jiang Z L, Wang C and Zhang F 2008 Chin. Phys. Lett. 25 2125 |
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
