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Zongmin Hu, Zonglin Jiang. Wave dynamic processes in cellular detonation reflection from wedges[J]. Chinese Journal of Theoretical and Applied Mechanics, 2007, 39(1): 33-41. DOI: 10.6052/0459-1879-2007-1-2005-431
Citation: Zongmin Hu, Zonglin Jiang. Wave dynamic processes in cellular detonation reflection from wedges[J]. Chinese Journal of Theoretical and Applied Mechanics, 2007, 39(1): 33-41. DOI: 10.6052/0459-1879-2007-1-2005-431
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Wave dynamic processes in cellular detonation reflection from wedges

  • Received Date: September 04, 2005
  • Revised Date: August 06, 2006
    Graphical Abstract
    • Abstract
  • When the cell width of the incident detonation wave (IDW) is comparable to or larger than the Mach stem height, self-similarity will fail during IDW reflection from a wedge surface. In this paper, the detonation reflection from wedges is investigated for at the wave dynamic processes occurring in the wave front, including transverse shock motion and detonation cell variations behind the Mach stem. A detailed reaction model is implemented to simulate two-dimensional cellular detonations in stoichiometric mixtures of H2/O2 diluted by Argon. The numerical results show that the transverse waves, which cross the triple point trajectory of Mach reflection, travel along the Mach stem and reflect back from the wedge surface, control the size of the cells in the region swept by the Mach stem. It is the energy carried by these transverse waves that sustain the triple-wave-collision of higher frequency within the over-driven Mach stem. In some cases, local wave dynamic processes and wave structures play a dominant role in determining the pattern of cellular record, leading to the fact that the cellular patterns after the Mach stem exhibit some peculiar modes.
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