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Full factorial design analysis of thermodynamic and kinetic parameters in simulated thermite reaction propagation
Continuum Mechanics and Thermodynamics ( IF 2.6 ) Pub Date : 2023-07-28 , DOI: 10.1007/s00161-023-01243-7
Kesiany M. de Souza , Marcelo J. S. de Lemos

This research investigates the effects of thermodynamic and kinetic parameters on simulated Fe\(_{{2}}\)O\(_{{3}}\)–2Al thermite reaction propagation. For that, a full-factorial design was applied. Five parameters were investigated: mixture density (A), thermal conductivity (B), specific heat (C), activation energy (D), and pre-exponential factor (E). Among these factors investigated, the activation energy, the specific heat, and their two-factor interaction had by far the highest percentage contribution of effects in the five responses observed: burning velocity, thickness of the reaction zone, peak temperature, ignition temperature, and ignition delay. Higher activation energy and specific heat resulted in a slower and thicker reaction propagation wave that required a longer time to ignite and reached a lower peak temperature. However, while activation energy affected the ignition temperature positively, the specific heat presented a negative effect. The remaining parameters had less pronounced effects but were significant in all five responses. Moreover, regression models of burning velocity, thickness, and ignition delay responses were estimated, which allowed mapping effects on these responses through contour plots of the main two-factor interactions.



中文翻译:

模拟铝热反应传播中热力学和动力学参数的全析因设计分析

本研究研究热力学和动力学参数对模拟 Fe \(_{{2}}\) O \(_{{3}}\)的影响–2Al铝热反应传播。为此,应用了全因子设计。研究了五个参数:混合物密度 (A)、导热率 (B)、比热 (C)、活化能 (D) 和指前因子 (E)。在这些研究的因素中,活化能、比热及其两因素相互作用在观察到的五个响应中具有迄今为止最高的影响百分比:燃烧速度、反应区厚度、峰值温度、着火温度和点火延迟。较高的活化能和比热导致反应传播波较慢且较厚,需要较长的时间才能点燃并达到较低的峰值温度。然而,虽然活化能对着火温度产生积极影响,但比热却呈现出负面影响。其余参数的影响不太明显,但在所有五个响应中都很显着。此外,还估计了燃烧速度、厚度和点火延迟响应的回归模型,从而可以通过主要两因素相互作用的等高线图来绘制对这些响应的影响。

更新日期:2023-07-28
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