A FLAME-BUBBLE ANALOG AND ITS STABILITY

被引：8

作者：

WEERATUNGA, S ^{[1
]}

BUCKMASTER, J ^{[1
]}

JOHNSON, RE ^{[1
]}

机构：

[1] UNIV ILLINOIS,URBANA,IL 61801

来源：

COMBUSTION AND FLAME | 1990年 / 79卷 / 01期

关键词：

D O I：

10.1016/0010-2180(90)90089-A

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Lean hydrogenair mixtures confined to a flammability tube can support "flame-bubbles"-very small, highly curved flames that rise because of buoyancy. An approximate description of the flow field associated with a single unbounded flame is provided by numerical solution of the Navier-Stokes equations for distributed heat sources rising at constant speed in a gravitational field. Zeldovich has proposed a theoretical model valid at 0 g (zero Reynolds number) but it has only unstable solutions. We describe a "flame-cap" model, valid for finite g, and suggest that the flow field is an essential stabilizing mechanism. © 1990.

引用

页码：100 / 109

页数：10