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Comparison between the Full Chemistry and Global Reaction Models for Tulip Flame Simulation

机译:郁金香火焰模拟的完全化学模型和全局反应模型之间的比较

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摘要

Laminar hydrogen-air flames propagating in a closed chamber are simulated by using a full chemistry and a global reaction model with various wall conditions. The results show that both models can predict the tulip flame formation. However, compared to the global reaction model, the full chemistry model shows more accurate flame structure such as the formation of unburnt gas pocket and cellular flame at the end stage of its propagation. The full chemistry model also shows that the "squish flow" in the unburnt region between the flame and the Side wall persists during the period of tulip flame formation.
机译:通过使用完整的化学反应和具有各种壁面条件的整体反应模型,模拟了在密闭室内传播的层状氢空气火焰。结果表明,两种模型都可以预测郁金香的火焰形成。但是,与整体反应模型相比,完整的化学模型显示出更准确的火焰结构,例如未扩散的气穴形成和在其传播结束阶段的蜂窝状火焰。完整的化学模型还表明,在火焰与侧壁之间的未燃烧区域中的“挤压流”在郁金香火焰形成期间持续存在。

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