Analysis of the contribution of curvature to premixed flame propagation

被引：188

作者：

Echekki, T ^{[1
]}

Chen, JH ^{[1
]}

机构：

[1] Sandia Natl Labs, Livermore, CA 94551 USA

来源：

COMBUSTION AND FLAME | 1999年 / 118卷 / 1-2期

关键词：

D O I：

10.1016/S0010-2180(99)00006-1

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A numerical study was conducted to identify the contributions of curvature to the displacement speed of turbulent premixed flame by using the governing transport equation for the deficient reactant. The displacement speed was shown to be a balance of three components: reaction, normal diffusion, and curvature. The contribution of the three components was evaluated using results from direct numerical simulations (DNS) of an unsteady stoichiometric methane-air flame embedded in a 2-D vortical flow field.

引用

页码：308 / 311

页数：4

共 12 条

[1]

BRAY KNC, 1994, TURBULENT REACTING F, P63

[2]

CHEN JH, 1998, 27 INT S COMB COMB I

[3]

CLAVIN P, 1983, J PHYS LETT-PARIS, V44, pL1

[4] The mechanism of mutual annihilation of stoichiometric premixed methane-air flames [J].

Echekki, T ;

Chen, JH ;

Gran, I .

TWENTY-SIXTH SYMPOSIUM (INTERNATIONAL) ON COMBUSTION, VOLS 1 AND 2, 1996, :855-863

[5] Unsteady strain rate and curvature effects in turbulent premixed methane-air flames [J].

Echekki, T ;

Chen, JH .

COMBUSTION AND FLAME, 1996, 106 (1-2) :184-202

[6] Negative flame speed in an unsteady 2-D premixed flame: A computational study [J].

Gran, IR ;

Echekki, T ;

Chen, JH .

TWENTY-SIXTH SYMPOSIUM (INTERNATIONAL) ON COMBUSTION, VOLS 1 AND 2, 1996, :323-329

[7] FIELD EQUATION FOR INTERFACE PROPAGATION IN AN UNSTEADY HOMOGENEOUS FLOW FIELD [J].

KERSTEIN, AR ;

ASHURST, WT ;

WILLIAMS, FA .

PHYSICAL REVIEW A, 1988, 37 (07) :2728-2731

[8]

Markstein G. H., 1964, AGARD MONOGRAPH, V75

[9] FLAMES AS GAS-DYNAMIC DISCONTINUITIES [J].

MATALON, M ;

MATKOWSKY, BJ .

JOURNAL OF FLUID MECHANICS, 1982, 124 (NOV) :239-259

[10]

PETERS N, UNPUB J FLUID MECH

← 1 2 →