Abstract
A combustion model has been formulated to solve the burning rate eigenvalue problem for a model heterogeneous solid propellant (two- dimensional sandwich) with Peclet number of O(1), similar to what has been done previously for homogeneous energetic solids. A two-step reaction sequence (high-activation-energy, condensed-phase decomposition followed by low-activation-energy, gas-phase heat release) has been extended from one to two dimensions for nonpremixed (heterogeneous fuel/oxidizer) composite solids. Gas-phase streamwise diffusion, the primary driving force for solid pyrolysis, has been accounted for by including a finite value of the Peclet number. The results show that the value of the Peclet number, a nondimensional burning rate, is constrained to a reasonably small interval by the eigenvalue expression obtained from activation energy asymptotic analysis of the condensed-phase thermal decomposition zone. These results demonstrate the feasibility of and general approach for solving the two-dimensional composite propellant burning rate as an eigenvalue problem. (C) 2000 by The Combustion Institute.
Original language | English (US) |
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Pages (from-to) | 91-106 |
Number of pages | 16 |
Journal | Combustion and Flame |
Volume | 121 |
Issue number | 1-2 |
DOIs | |
State | Published - Apr 1 2000 |
ASJC Scopus subject areas
- Chemistry(all)
- Chemical Engineering(all)
- Fuel Technology
- Energy Engineering and Power Technology
- Physics and Astronomy(all)