一个新的多步骤的全球机制方案,用于n-decane燃烧
Shaozhuan Xiong1,2, Yantian Bi2
1Research Center of Combustion Aerodynamics, Southwest University of Science and Technology, Mianyang 621000, China.
Entropy (Basel, Switzerland)
|October 28, 2023
概括
研究人员使用误差传播 (DRGEP) 和准稳态近似 (QSSA) 方法简化了详细的n-decane燃烧模型. 由此产生的减少机制准确地预测了燃烧特性,提高了模拟的计算效率.
科学领域:
- 化学动力学 化学动力学
- 燃烧科学是一种科学.
- 计算流体动力学 计算流体动力学
背景情况:
- 详细的化学动力学机制对于精确的燃烧模拟至关重要,但在计算上昂贵.
- 需要简化方法来减少这些机制的复杂性,以便实际应用.
研究的目的:
- 开发一种显著减少的化学动力机制,用于n-decane燃烧.
- 根据详细的模型验证缩小机制的准确性.
主要方法:
- 应用有误传播的定向关系图 (DRGEP) 方法,将119个物种,527个反应详细的n-decane机制减少到32个物种,73个反应的骨架机制.
- 使用准稳定状态近似法 (QSSA) 进一步减少骨机制,以获得18种,14个反应的全球机制.
主要成果:
- 从详细的机制中得出了32个物种和73个反应的骨机制.
- 通过使用QSSA获得了18个物种和14个全球反应的进一步减少机制.
- 骨架和减少机制都准确地重现了详细机制在各种初始条件下的燃烧特征.
结论:
- 开发的减少和骨架机制为n-decane燃烧的详细机制提供了一个计算效率高的替代方案.
- 这些简化模型适合集成到大规模的燃烧模拟中,提高计算效率而不牺牲准确性.
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