2024-03-28T17:55:34Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00030714
2023-01-16T04:55:06Z
320:2524:2544:2547
Cellular detonation-instability and sub-structure
Sugimura, Tadayoshi
Fujiwara, Toshitaka
Lee, John H.
open access
The instability and irregularity of multi-dimensional detonations, experimentally observed for a long time, are studied numerically. By increasing computational resolution significantly the computed results are able to reproduce most of the salient experimental features like inherent instability of a plane ZND detonation, irregular triple-shock structures seen in self-sustaining detonations and very fine triple-shock structures superimposed in a macroscopic triple-shock configuration. Different-strength perturbations are also applied to (i) a ChapmanJouguet and (ii) well-developed multi-dimensional detonations, using different grid resolutions; confirming decoupling of the former and self-sustenance of the latter. Although the effect of resolution on the essential features of a detonation is observed, there seems to be a critical resolution above which most of the experimentally-observed important phenomena are maintained in the numerical simulation.
Faculty of Engineering, Nagoya University
1991-03-30
eng
departmental bulletin paper
VoR
https://doi.org/10.18999/memfenu.42.2.360
http://hdl.handle.net/2237/00032899
https://nagoya.repo.nii.ac.jp/records/30714
10.18999/memfenu.42.2.360
0027-7657
Memoirs of the Faculty of Engineering, Nagoya University
42
2
360
373
https://nagoya.repo.nii.ac.jp/record/30714/files/42-2-04.pdf
application/pdf
1.6 MB
2020-10-29