• DOI:10.1063/1.4907267
• Corpus ID: 118417074

Geometric scaling for a detonation wave governed by a pressure-dependent reaction rate and yielding confinement

@article{Li2014GeometricSF,
  title={Geometric scaling for a detonation wave governed by a pressure-dependent reaction rate and yielding confinement},
  author={Jianling Li and Xiaocheng Mi and Andrew J. Higgins},
  journal={Physics of Fluids},
  year={2014},
  volume={27},
  pages={027102}
}

• Jianling Li, X. Mi, A. Higgins
• Published 30 May 2014
• Physics, Engineering
• Physics of Fluids

The propagation of detonation waves in reactive media bounded by an inert, compressible layer is examined via computational simulations in two different geometries, axisymmetric cylinders, and two dimensional, planar slabs. For simplicity, an ideal gas equation of state is used with a pressure-dependent reaction rate that results in a detonation wave structure that does not exhibit cellular instability. The detonation is initiated as an ideal Chapman-Jouguet (CJ) detonation with a one-dimensional structure, and then allowed to propagate into a finite diameter or thickness layer of explosive surrounded by an inert layer. The yielding confinement of the inert layer results in the detonation wave decaying to a sub-CJ steady state velocity or failing entirely. Simulations are performed with different values of the reaction rate pressure exponent (n = 2 and 3) and different impedance confinement (greater than, less than, and equal to that of the explosive). The velocity decrement and critical dimension (critic...