A new route to chaos in gasless combustion
It has been observed that the gasless combustion of thermites can proceed in a variety of nonsteady propagation modes that range from periodic to chaotic in character. While the nature of the transition from steady to nonsteady, but periodic, combustion is now well understood, the various mechanisms by which more complex (e.g., chaotic) modes of burning are realized is not. However, it has been shown that mode interactions which arise after the neutral stability boundary is crossed do lead to combustion waves that exhibit more complicated spatial and temporal behavior. In the present work, we focus on the case of temporally resonant mode interactions and show how such interactions can provide a new route to chaos in gasless system. The resulting character of the propagating combustion wave is that of chaotic, multiple-point combustion, in which one may observe the random movement of hot spots that appear, disappear and reappear on the sample surface, as reported in recent experiments. Various quantitative measures of this attractor are then presented.
- Research Organization:
- Sandia National Labs., Livermore, CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-76DR00789
- OSTI ID:
- 10115507
- Report Number(s):
- SAND-91-8633; CONF-9110320-1; ON: DE92005500
- Resource Relation:
- Conference: 1991 Western States Section/The Combustion Institute fall meeting,Los Angeles, CA (United States),13-15 Oct 1991; Other Information: PBD: Dec 1991
- Country of Publication:
- United States
- Language:
- English
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ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
COMBUSTION
STATISTICAL MODELS
THERMITE PROCESS
RANDOMNESS
MATHEMATICAL MODELS
WAVE PROPAGATION
NONLINEAR PROBLEMS
COMBUSTION WAVES
400800
990200
COMBUSTION, PYROLYSIS, AND HIGH-TEMPERATURE CHEMISTRY
MATHEMATICS AND COMPUTERS