Tracking flame base movement and interaction with ignition kernels using topological methods
Tracking flame base movement and interaction with ignition kernels using topological methods
复制标题
使用拓扑方法跟踪火焰基座运动以及与点火内核的相互作用
DOI：
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发表时间：
2009
期刊：
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通讯作者：
Jacqueline H. Chen
中科院分区：
文献类型：
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作者：
A. Mascarenhas;R. Grout;C. Yoo;Jacqueline H. Chen
我们根据 YOH 场引起的拓扑结构，在升力喷射火焰的模拟中分割稳定区域。我们的分割方法产生与火焰底座和潜在的自燃内核相对应的区域。我们应用基于区域重叠的跟踪方法来跟踪火焰底座和内核随时间的变化，以研究内核的演化，并检测内核何时与火焰合并。我们的分割和跟踪方法的结合使我们能够通过火焰底座和内核之间的合并来观察火焰稳定性；我们还获得了内核内部的 YCH2O 历史，并检测到在向发达火焰过渡期间自由基浓度明显下降。
We segment the stabilization region in a simulation of a lifted jet flame based on its topology induced by the YOH field. Our segmentation method yields regions that correspond to the flame base and to potential auto-ignition kernels. We apply a region overlap based tracking method to follow the flame-base and the kernels over time, to study the evolution of kernels, and to detect when the kernels merge with the flame. The combination of our segmentation and tracking methods allow us observe flame stabilization via merging between the flame base and kernels; we also obtain YCH2O histories inside the kernels and detect a distinct decrease in radical concentration during transition to a developed flame.