Abstract Simulation of quasi one-dimensional reacting flow is a standard in many combustion studies. Here Ember, a new open-source code for efficiently performing these calculations using large, detailed chemical kinetic models is presented. Ember outperforms other standard software, such as Chemkin, in computation time by leveraging rebalanced Strang operator splitting which does not suffer the steady-state inaccuracies of most splitting methods. The splitting approach and implementation used in Ember are described. Ember is validated for computation of flame extinction through imposed strain, extinction strain rate (ESR), and shown to be capable of modeling three typical experimental strained flame configurations: premixed twin flames, premixed single flames opposing inert, and diffusion flames. As further demonstration, Ember is used to investigate Lewis number effects on ESR using a detailed chemical kinetic model with 500 species for simulation of strained extinction of lean (Le > 1) and rich (Le

中文翻译：

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Ember：使用大型动力学模型的一维反应流的开源瞬态求解器，适用于应变消光

摘要 准一维反应流的模拟是许多燃烧研究的标准。在这里，Ember 提供了一种新的开源代码，可使用大型、详细的化学动力学模型有效地执行这些计算。Ember 通过利用重新平衡的 Strang 算子分裂在计算时间上优于其他标准软件，例如 Chemkin，该分裂不会遭受大多数分裂方法的稳态不准确性。描述了 Ember 中使用的拆分方法和实现。Ember 已通过外加应变、消光应变率 (ESR) 验证用于计算火焰消光，并证明能够模拟三种典型的实验应变火焰配置：预混双火焰、对抗惰性的预混单火焰和扩散火焰。作为进一步论证，