Multiplicity of detonation regimes in systems with a multi-peaked thermicity

  title={Multiplicity of detonation regimes in systems with a multi-peaked thermicity},
  author={S. S.-M. Lau-Chapdelaine and Fan Zhang and Matei Ioan Radulescu},
  journal={Combustion Theory and Modelling},
  pages={460 - 485}
The study investigates detonations with multiple quasi-steady velocities that have been observed in the past in systems with multi-peaked thermicity, using Fickett's detonation analogue. A steady-state analysis of the travelling wave predicts multiple states, however, all but the one with the highest velocity develop a singularity after the sonic point. Simulations show singularities are associated with a shock wave which overtakes all sonic points, establishing a detonation travelling at the… 

Detonation model using Burgers equation and a pulsed reaction

This study uses a simplified detonation model to investigate the behaviour of detonations with galloping-like pulsations. The reactive Burgers equation is used for the hydrodynamic equation, coupled

Two separate decay timescales of a detonation wave modeled by the Burgers equation and their relation to its chaotic dynamics.

A simplified detonation model is used to investigate the behavior of detonations with galloping-like pulsations, revealing a sawtooth evolution of the front velocity with a period-averaged detonation speed equal to the Chapman-Jouguet velocity.



Effects of momentum and heat losses on the multiplicity of detonation regimes

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The problem of propagation of steady nonideal detonations in heterogeneous hybrid mixtures is studied in the case of a hydrogen-air gaseous mixture with suspended fine aluminum particles. Due to the

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The renewed interest in safety issues for large scale industrial devices and in high speed combustion has driven recent intense efforts to gain a deeper theoretical understanding of detonation wave

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The problem of detonation initiation is studied in the case of hybrid two-phase mixtures consisting of a hydrogen-air gaseous mixture with suspended fine aluminium particles. In preceding works on

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A description of the dynamics of planar detonations is developed for detonations in mixtures having heat release small compared with the thermal enthalpy, under conditions that include small

Influence of discrete sources on detonation propagation in a Burgers equation analog system.

  • X. MiA. Higgins
  • Physics, Engineering
    Physical review. E, Statistical, nonlinear, and soft matter physics
  • 2015
The measurement of the average velocity of the leading shock front for systems of both regular, fixed-period and randomized sources is found to be in close agreement with the Velocity of the equivalent CJ detonation in a uniform medium, wherein the sources have been spatially homogenized.