On model evolution equations for the whole surface of three-dimensional expanding wrinkled premixed flames
On model evolution equations for the whole surface of three-dimensional expanding wrinkled premixed flames
复制标题
三维膨胀皱纹预混火焰全表面模型演化方程
DOI：
10.1088/1364-7830/4/3/305
复制
发表时间：
2000
影响因子：
1.3
通讯作者：
Gaël Boury
中科院分区：
文献类型：
--
作者：
Y. D’Angelo;G. Joulin;Gaël Boury
借用结构的积木从潜在的流体力学，我们建立了模型的演化方程来模拟适度褶皱的三维火焰在气体预混物中扩展。这些演变方程包含了流体动力学不稳定性，局部曲率效应，惠更斯型非线性，并可以科普宽带强迫需要时。伪谱积分在勒让德-傅立叶基础上产生的演化的整个战线是在惊人的定性协议与实验上的自由或弱强迫传播。我们的结果是强大的对教育的变化建模。只要有一个精确的演化方程，这种方法就可以模拟比DNS目前所能处理的要大得多的膨胀火焰，至少在所选的配置中是这样。
Borrowing the structure of building blocks from potential hydrodynamics, we set up model evolution equations to mimic moderately wrinkled three-dimensional flames expanding in gaseous premixtures. These evolution equations incorporate a hydrodynamic instability, local curvature effects, a Huygens-type nonlinearity, and can cope with broad-banded forcing whenever needed. Pseudo-spectral integrations in the Legendre–Fourier basis yield evolutions of the whole front that are in striking qualitative agreement with experiments on free or weakly forced propagations. Our results are robust against educated changes in the modelling. Provided an accurate evolution equation is available, this approach can simulate expanding flames which are quite a bit larger than what DNS can currently handle, at least in the chosen configurations.