Premixed methane/air flame propagating in an obstructed chamber with different BRs and spatial configurations

被引：14

作者：

Li, Yanchao ^{[1
]}

Chen, Peng ^{[2
]}

Bi, Mingshu ^{[1
]}

Gao, Wei ^{[1
]}

机构：

[1] Dalian Univ Technol, Sch Chem Machinery & Safety Engn, Dalian 116024, Liaoning, Peoples R China

[2] China Univ Min & Technol Beijing, Sch Resources & Safety Engn, Beijing 100083, Peoples R China

来源：

JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES | 2017年 / 47卷

基金：

中国国家自然科学基金;

关键词：

Obstacle BR; Spatial configurations; Flame tip speed; Deflagration overpressure; Second flame acceleration; ACCELERATION; OBSTACLES;

D O I：

10.1016/j.jlp.2017.02.030

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The effects of obstacle blockage ratio (BR) and spatial configurations on premixed methane/air flame propagation are experimentally investigated by the high-speed video photography and pressure transducer. The results demonstrate that the flame shape changes, flame tip speed and deflagration overpressure in the initial stage are not affected by the obstacles with different BRs and spatial configurations. After the moving flame feels the obstacle, flame tip speed and overpressure increase significantly with increasing obstacle BR for center-installed obstacle. The first peak value of flame tip speed with bottom installed obstacle is slightly larger than that with center-installed obstacle. Two-peak structure is observed in the curves of flame tip speed, and overpressure variation depends strongly on the second flame acceleration, which also explains the fact that deflagration overpressure with bottom-installed obstacle is smaller than that with center-installed obstacle with time ranging from t = 36 m to t = 90 m. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：66 / 71

页数：6

共 50 条

[21] Effect of additional diluents on flame propagation speed and markstein length in outwardly propagating premixed methane/ethylene–air flames
Hee June Kim
Kyuho Van
Kee Man Lee
Dae Keun Lee
Young Tae Guahk
Sang In Keel
Jeong Park
Journal of Mechanical Science and Technology, 2018, 32 : 5501 - 5509
[22] Laminar flame speed, Markstein length, and cellular instability for spherically propagating methane/ethylene-air premixed flames
Kim, Hee J.
Van, Kyuho
Lee, Dae K.
Yoo, Chun S.
Park, Jeong
Chung, Suk H.
COMBUSTION AND FLAME, 2020, 214 : 464 - 474
[23] The Function of Hydrogen Chloride on Methane-Air Premixed Flame
Shin, Sung Su
Lee, Ki Yong
TRANSACTIONS OF THE KOREAN SOCIETY OF MECHANICAL ENGINEERS B, 2005, 29 (09) : 979 - 987
[24] STUDY OF A NON-PREMIXED METHANE / AIR PILOT FLAME
El Khalil, Bendadi Mohammed
PROCEEDINGS OF THE ASME 2022 POWER CONFERENCE, POWER2022, 2022,
[25] Large eddy simulation of methane-air deflagration in an obstructed chamber using different combustion models
Wen, Xiaoping
Yu, Minggao
Liu, Zhichao
Sun, Wence
JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES, 2012, 25 (04) : 730 - 738
[26] STABLE SPECIES CONCENTRATION OF A TURBULENT PREMIXED METHANE AIR FLAME
SOMMER, HT
ADAMS, W
COMBUSTION AND FLAME, 1983, 49 (1-3) : 1 - 12
[27] Premixed methane-air flame under alternate gravity
Krikunova, A., I
ACTA ASTRONAUTICA, 2020, 175 : 627 - 634
[28] Characterization of sodium in a partially premixed laminar methane/air flame
Flynn, AM
Apostolou, D
Barat, RB
CHEMICAL AND PHYSICAL PROCESSES IN COMBUSTION, 1997, : 415 - 418
[29] Flame acceleration of premixed methane/air explosion in parallel pipes
State key Laboratory of Coal Resources and Safe Mining and Faculty of Safety Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China
不详
J. Loss Prev. Process Ind., 1600, 2 (383-390):
[30] Flame acceleration of premixed methane/air explosion in parallel pipes
Zhu, Chuanjie
Lin, Baiquan
Jiang, Bingyou
JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES, 2012, 25 (02) : 383 - 390

← 1 2 3 4 5 →