Turbulent combustion in open and closed vessels
Turbulent combustion in open and closed vessels
复制标题
开放式和封闭式容器中的湍流燃烧
DOI：
10.1016/0021-9991(84)90126-8
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发表时间：
1984
影响因子：
4.1
通讯作者：
J. Sethian
中科院分区：
文献类型：
--
作者：
J. Sethian
我们提出了一种数值技术来近似的湍流燃烧的简化模型的解决方案。该方法，这是特别适合于在高雷诺数的流动，使用随机涡元技术耦合到基于Huyghens'原则的火焰传播算法。我们使用这种技术来分析开放和封闭容器中的燃烧。在第一个实验中，我们模拟了一个封闭的正方形内的旋转，粘性流中的火焰传播。我们的研究结果显示了反向旋转湍流涡的生长和发展及其对火焰的影响。在第二个实验中，我们模拟了通道内的湍流燃烧，在通道中，气流通过一端的狭缝进入。结果详细说明了粘性和粘度对燃烧前沿的速度和形状的影响。
We present a numerical technique to approximate the solution of a simplified model of turbulent combustion. The method, which is particularly suited for flows at high Reynolds number, uses random vortex element techniques coupled to a flame propagation algorithm based on Huyghens' principle. We use this technique to analyze combustion in open and closed vessels. In the first experiment, we model a flame propagating in a swirling, viscous flow inside a closed square. Our results show the growth and development of counterrotating turbulent eddies and their effect on the flame. In the second experiment, we model turbulent combustion within a channel, in which flow enters through a slit at one end. Results detail the effects of exothermicity and viscosity on the speed and shape of the burning front.