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

L.P.H. Goey, de; J.H.M. Thije Boonkkamp, ten

doi:10.1080/00102209708935618

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

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Abstract

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 = \/m (dm/dt), denoting the fractional change of mass in an infinitesimally small flame volume.

Original language	English
Pages (from-to)	399-405
Journal	Combustion Science and Technology
Volume	122
Issue number	1-6
DOIs	https://doi.org/10.1080/00102209708935618
Publication status	Published - 1997

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title = "A mass-based definition of flame stretch for flames with finite thickness",

abstract = "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 = \textbackslash{}/m (dm/dt), denoting the fractional change of mass in an infinitesimally small flame volume.",

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AU - Goey, de, L.P.H.

AU - Thije Boonkkamp, ten, J.H.M.

PY - 1997

Y1 - 1997

N2 - 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 = \/m (dm/dt), denoting the fractional change of mass in an infinitesimally small flame volume.

AB - 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 = \/m (dm/dt), denoting the fractional change of mass in an infinitesimally small flame volume.

U2 - 10.1080/00102209708935618

DO - 10.1080/00102209708935618

M3 - Article

SN - 0010-2202

VL - 122

SP - 399

EP - 405

JO - Combustion Science and Technology

JF - Combustion Science and Technology

IS - 1-6

ER -

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

Abstract

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