Please use this identifier to cite or link to this item:
|Title:||Effect of initial disturbance on the detonation front structure of a narrow duct||Authors:||Dou, H.-S.
|Issue Date:||Apr-2010||Citation:||Dou, H.-S., Khoo, B.C. (2010-04). Effect of initial disturbance on the detonation front structure of a narrow duct. Shock Waves 20 (2) : 163-173. ScholarBank@NUS Repository. https://doi.org/10.1007/s00193-009-0240-8||Abstract:||The effect of an initial disturbance on the detonation front structure in a narrow duct is studied by three-dimensional numerical simulation. The numerical method used includes a high-resolution fifth-order weighted essentially non-oscillatory scheme for spatial discretization, coupled with a third-order total variation diminishing Runge-Kutta time-stepping method. Two types of disturbances are used for the initial perturbation. One is a random disturbance which is imposed on the whole area of the detonation front, and the other is a symmetrical disturbance imposed within a band along the diagonal direction on the front. The results show that the two types of disturbances lead to different processes. For the random disturbance, the detonation front evolves into a stable spinning detonation. For the symmetrical diagonal disturbance, the detonation front displays a diagonal pattern at an early stage, but this pattern is unstable. It breaks down after a short while and it finally evolves into a spinning detonation. The spinning detonation structure ultimately formed due to the two types of disturbances is the same. This means that spinning detonation is the most stable mode for the simulated narrow duct. Therefore, in a narrow duct, triggering a spinning detonation can be an effective way to produce a stable detonation as well as to speed up the deflagration to detonation transition process. © Springer-Verlag 2010.||Source Title:||Shock Waves||URI:||http://scholarbank.nus.edu.sg/handle/10635/60049||ISSN:||09381287||DOI:||10.1007/s00193-009-0240-8|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Oct 18, 2019
WEB OF SCIENCETM
checked on Oct 18, 2019
checked on Oct 13, 2019
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.