Near-lean limit combustion regimes of low-Lewis-number stretched premixed flames

被引：19

作者：

Fursenko, Roman ^{[1
,4
]}

Minaev, Sergey ^{[1
,4
]}

Nakamura, Hisashi ^{[2
]}

Tezuka, Takuya ^{[2
]}

Hasegawa, Susumu ^{[2
]}

Kobayashi, Tomoya ^{[2
]}

Takase, Koichi ^{[2
]}

Katsuta, Masato ^{[3
]}

Kikuchi, Masao ^{[3
]}

Maruta, Kaoru ^{[2
,4
]}

机构：

[1] SB RAS, Khristianovich Inst Theoret & Appl Mech, Novosibirsk 630090, Russia

[2] Tohoku Univ, Inst Fluid Sci, Aoba Ku, Sendai, Miyagi 9808577, Japan

[3] Japan Aerosp Explorat Agcy, Tsukuba Space Ctr, Tsukuba, Ibaraki 3058505, Japan

[4] Far Eastern Fed Univ, Vladivostok 690950, Russia

来源：

COMBUSTION AND FLAME | 2015年 / 162卷 / 05期

关键词：

Counterflow premixed flames; Cellular flames; Heat loss; Flame ball; Diffusive-thermal instability; TRANSITION; STABILITY; BALLS;

D O I：

10.1016/j.combustflame.2014.11.032

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Dynamic behavior and 3D spatial structure of low-Lewis-number counterflow premixed flames are numerically studied in the frame of thermo-diffusive model with one-step chemical reaction. The diverse combustion regimes are described and regions of existence of these regimes in equivalence ratio/stretch rate plane are identified. Qualitative comparison between numerical results and results of microgravity experiments are discussed. Experiments and numerical simulations demonstrate that at small stretch rate conditions lean low-Lewis-number counterflow flames can appear as a set of separate ball-like flames in a state of chaotic motion. The extension of extinction limits associated with existence of sporadic combustion regimes is observed. (C) 2014 The Combustion Institute. Published by Elsevier Inc. All rights reserved.

引用

页码：1712 / 1718

页数：7

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