Radiative extinction of burner-supported spherical diffusion flames: A scaling analysis

被引：8

作者：

Nayagam, Vedha ^{[1
]}

Dietrich, Daniel L. ^{[2
]}

Williams, Forman A. ^{[3
]}

机构：

[1] Case Western Reserve Univ, Dept Mech & Aerosp Engn, Cleveland, OH 44106 USA

[2] NASA, Glenn Res Ctr, Cleveland, OH 44135 USA

[3] Univ Calif San Diego, Dept Mech & Aerosp Engn, La Jolla, CA 92093 USA

来源：

COMBUSTION AND FLAME | 2019年 / 205卷

关键词：

Radiative extinction; Spherical diffusion flames; Inverse flames; MIXTURES;

D O I：

10.1016/j.combustflame.2019.04.027

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A scaling analysis of burner-supported spherical-diffusion-flame extinction brought about by radiative heat loss is presented. The results are compared against earlier microgravity experimental data and unsteady numerical computations with detailed chemistry available in the literature, for normal and inverse flames. The flame diameter at extinction is shown to correlate well with the present model, in which the extinction radius scales with one-third power of gas flow rate times reactant mass fraction divided by the Planck-mean absorption coefficient. (C) 2019 The Combustion Institute. Published by Elsevier Inc. All rights reserved.

引用

页码：368 / 370

页数：3

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