A mass-based definition of flame stretch for flames with finite thickness

被引：45

作者：

DeGoey, LPH ^{[1
]}

Boonkkamp, JHMT ^{[1
]}

机构：

[1] EINDHOVEN UNIV TECHNOL,DEPT MATH & COMP SCI,NL-5600 MB EINDHOVEN,NETHERLANDS

来源：

COMBUSTION SCIENCE AND TECHNOLOGY | 1997年 / 122卷 / 1-6期

关键词：

flame stretch; 3D instationary flames;

D O I：

10.1080/00102209708935618

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The flame stretch concept is extended for the case of 3D instationary flames with finite flame Front thickness. It is shown that additional contributions to the stretch rate appear apart from the terms which are usually used in flame studies. These extra terms are associated with variations in the mass density along the flame iso-contours and with variations in flame front thickness in time and space. It is finally shown that the following definition for the stretch rate is applicable: K = 1/m (dm/dt), denoting the fractional change of mass in an infinitesimally small flame volume.

引用

页码：399 / 405

页数：7

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