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An efficient and accurate optimization method for the chemical-diffusive model
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DOI：10.1016/j.combustflame.2021.111517.png)
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摘要
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The reaction and diffusion parameters of the recently developed Chemical-Diffusive Model for flame acceleration and deflagration-to-detonation transition are generally determined through an optimization procedure based on global or one-dimensional properties of flames and detonations. The current genetic algorithm optimization procedure requires repeated computations of a flame profile and Zel'dovichNeumann-Doring structure to extract combustion properties using various parameter combinations. Here, we show that the combustion properties of interest can be found from closed-form expressions based on analytical or asymptotic results, and the optimal parameters become roots of a system of nonlinear equations. The calibrated Chemical-Diffusive Model using the new procedure is generally as accurate as those using the current optimization approach and extends the possibilities to non-unity Lewis numbers. (c) 2021 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
Keyword:
chemical-diffusive model
deflagration-to-detonation transition
optimization
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