大气体膨胀比下向外传播流体动力不稳定火焰的非线性分析

IF 0.7 4区物理与天体物理 Q4 PHYSICS, MULTIDISCIPLINARY

Bulletin of the Lebedev Physics Institute Pub Date : 2025-07-28 DOI:10.3103/S1068335624602607

S. S. Minaev, V. V. Gubernov, E. P. Dats

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引用次数: 0

摘要

在大热膨胀近似下，导出了火焰在达里厄-朗道不稳定性条件下向外传播的方程。我们证明二阶理论导致火焰锋面扰动和未燃烧混合流势的两个演化方程的系统。在长演化的极限情况下，方程组可以简化为一个类似于Sivashinsky方程的方程。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Nonlinear Analysis of Outward Propagating Hydrodynamically Unstable Flame at Large Gas Expansion Ratio

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Nonlinear Analysis of Outward Propagating Hydrodynamically Unstable Flame at Large Gas Expansion Ratio

In the context of the large thermal-expansion approximation, we derive an equation describing outward propagating flame under conditions of Darrieus–Landau instability. We show that the second-order theory leads to system of two evolution equations for the flame front perturbations and for the potential of the unburned mixture flow. In the limiting case of long evolution, the system of equations can be reduced to one equation similar to the Sivashinsky equation.

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来源期刊

Bulletin of the Lebedev Physics Institute PHYSICS, MULTIDISCIPLINARY-

CiteScore

0.70

自引率

25.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Bulletin of the Lebedev Physics Institute is an international peer reviewed journal that publishes results of new original experimental and theoretical studies on all topics of physics: theoretical physics; atomic and molecular physics; nuclear physics; optics; lasers; condensed matter; physics of solids; biophysics, and others.