Formation and evolution of distorted tulip flames
Formation and evolution of distorted tulip flames
复制标题
扭曲郁金香火焰的形成和演化
DOI：
10.1016/j.combustflame.2015.08.020
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发表时间：
2015-11
影响因子：
4.4
通讯作者：
Oran Elaine S.
中科院分区：
文献类型：
--
作者：
Xiao Huahua;Houim Ryan W.;Oran Elaine S.
采用高阶数值方法和单步Arrhenius模型求解完全可压缩的反应N-S方程，模拟了闭合通道中郁金香和扭曲的郁金香火焰的发展和演化。模拟的重要特征包括：(1)声波的发展和传播及其对火焰演化的影响；(2)火焰锋面和侧壁附近火焰尖端的形成和坍塌，以及尖端坍塌对火焰传播的影响；(3)在郁金香或扭曲的郁金香火焰起始处出现不利的压力梯度，导致未燃烧气体中的反向流动。模拟结果突出了压力波、逆压梯度、边界层和传播的火焰锋面之间的耦合。虽然郁金香火焰的形成可以归因于几种效应(如压力波、涡旋运动和Landau-Darrieus不稳定性)，但扭曲的郁金香火焰的开始受到Rayleigh-Taylor不稳定性的强烈影响。
The development and evolution of tulip and distorted tulip flames in closed channels were simulated by solving the fully compressible reactive Navier–Stokes equations using a high-order numerical method and a single-step Arrhenius model for the reactions and energy release in a stoichiometric mixture of hydrogen and air. Important features of the simulations include (1) the development and propagation of acoustic waves and their effects on flame evolution, (2) the formation and collapse of flame cusps, both at the flame front and near the sidewalls, and the effects of cusp collapse on flame propagation, and (3) the appearance of adverse pressure gradients at the onset of the tulip or a distorted tulip flame, which result in reverse flow in the unburned gas. The simulations highlight the coupling between pressure waves, adverse pressure gradients, boundary layers, and the propagating flame front. Whereas the formation of the tulip flame can be attributed to several effects (such as pressure waves, vortex motion and Landau–Darrieus instabilities), the onset of the distorted tulip flame is strongly influenced by the Rayleigh–Taylor instability.
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影响因子：
4.6
作者：
V. Bychkov
通讯作者：
V. Bychkov
DOI：
10.1016/s0082-0784(00)80261-1
发表时间：
2000
期刊：
--
影响因子：
--
作者：
V. Gamezo;A. Vasil’ev;A. Khokhlov;E. Oran
通讯作者：
V. Gamezo;A. Vasil’ev;A. Khokhlov;E. Oran
影响因子：
1.3
作者：
P. Metzener;M. Matalon
通讯作者：
P. Metzener;M. Matalon
影响因子：
4.4
作者：
D. Bradley;M. Lawes;Kexin Liu
通讯作者：
D. Bradley;M. Lawes;Kexin Liu
影响因子：
2.2
作者：
Mike Kuznetsov;V. Alekseev;I. Matsukov;S. Dorofeev
通讯作者：
Mike Kuznetsov;V. Alekseev;I. Matsukov;S. Dorofeev