Front propagation in a turbulent medium
Front propagation in a turbulent medium
复制标题
湍流介质中的前传播
DOI：
10.1209/0295-5075/20/5/004
复制
发表时间：
1992
期刊：
影响因子：
1.8
通讯作者：
A. Pocheau
中科院分区：
文献类型：
--
作者：
A. Pocheau
我们探讨了预混湍流燃烧中湍流对火焰锋影响的尺度不变性。我们证明问题的相关速度之间的关系是重正化过程的不动点。这一性质使我们能够在不近似的情况下确定湍流燃烧速度的可能表达式。然后在密闭容器中对湍流火焰传播进行实验研究，注意消除除湍流本身之外的其他现象对火焰传播的影响。然后发现实验和理论之间具有良好的一致性，甚至超出了尺度不变性的预期有效性范围。
We explore scale invariance of the influence of turbulence on flame fronts for premixed turbulent combustion. We show that the relation between the relevant velocities of the problem is a fixed point of a renormalization procedure. This property enables us to determine without approximation the possible expressions of the turbulent burning velocity. Turbulent flame propagation is then studied experimentally in a closed vessel, care being taken to remove the contributions of phenomena other than turbulence itself to flame propagation. Good agreement between experiment and theory is then found, even beyond the expected range of validity of scale invariance.