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首页> 外文期刊>Combustion Science and Technology >ANALYSIS OF PREMIXED FLAME PROPAGATION IN A CLOSED ROTATING VESSEL BY NUMERICAL SIMULATION
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ANALYSIS OF PREMIXED FLAME PROPAGATION IN A CLOSED ROTATING VESSEL BY NUMERICAL SIMULATION

机译：密闭式旋转容器中火焰的过度传播的数值模拟分析

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摘要

Numerical simulations of the unsteady flame propagation inside a rotating vessel have been performed, providing a description of the flame behaviour from ignition to the unusual quenching of homogeneous and flammable methane-air mixtures, as experimentally observed. A detailed analysis of these results is presented that shows several interesting features of this flame. Particularly interesting are the detection of the flow structure at the edge of the flame near the side walls and of the action of a sliding component of the strain rate tensor. It has been also recognized that, just before the extinction, the flame becomes more intense and after this phase, it is difficult to separate well the unburnt and heavy fresh mixture from the hot and light burnt gases previously distinctly separated by the action of the centrifugal forces.
机译：已经对旋转容器内不稳定火焰传播进行了数值模拟，从实验观察到，该描述提供了从点燃到均相和可燃甲烷-空气混合物异常熄灭的火焰行为描述。给出了对这些结果的详细分析，显示了该火焰的一些有趣特征。特别有趣的是检测火焰在侧壁附近的边缘处的流动结构以及应变率张量的滑动分量的作用。还已经认识到，在熄灭之前，火焰变得更加强烈，并且在该阶段之后，难以将未燃烧的和重的新鲜混合物与之前通过离心作用明显分离的热的和轻的燃烧气体很好地分离。势力。

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