Experimental investigation of flame length of buoyancy-controlled jet flames from inclined rectangular nozzles

被引：10

作者：

Tao, Changfa ^{[1
,2
]}

Shen, Yan ^{[1
]}

Ren, Jie ^{[1
]}

Zhi, Youran ^{[1
,3
]}

Zong, Ruowen ^{[1
]}

机构：

[1] Univ Sci & Technol China, State Key Lab Fire Sci, Hefei, Anhui, Peoples R China

[2] Hefei Univ Technol, Sch Automot & Transportat Engn, Hefei, Anhui, Peoples R China

[3] NanJing Inst Technol, Sch Mech Engn, Nanjing, Jiangsu, Peoples R China

来源：

EXPERIMENTAL HEAT TRANSFER | 2019年 / 32卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Flame length; inclined angle; rectangular nozzles; jet flames; DIFFUSION FLAMES; AIR ENTRAINMENT; EMISSION CHARACTERISTICS; HEIGHT; PRESSURE;

D O I：

10.1080/08916152.2018.1505785

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In this paper, the buoyancy-controlled jet flames from the inclined rectangular nozzles with different aspect ratios have been investigated. The length-to-width aspect ratios of nozzles are 1, 2.25, 4, 9, and 16 with the same cross-sectional area. The inclined angles of the nozzle to the horizontal direction are 0 degrees, 30 degrees, 60 degrees, and 90 degrees. The value of flame length changes at the same inclined angle for different aspect ratios. A correlation has been developed to calculate the flame length of jet flame for different inclined nozzle and aspect ratios with an arbitrary angle.

引用

页码：239 / 250

页数：12

共 24 条

[1] On the Hysteresis Phenomenon of Turbulent Lifted Diffusion Methane Flame [J].

Akbarzadeh, Mohsen ;

Birouk, Madjid .

FLOW TURBULENCE AND COMBUSTION, 2015, 94 (03) :479-493

[2] AVERAGE CENTERLINE TEMPERATURES OF A BUOYANT POOL FIRE OBTAINED BY IMAGE-PROCESSING OF VIDEO RECORDINGS [J].

AUDOUIN, L ;

KOLB, G ;

TORERO, JL ;

MOST, JM .

FIRE SAFETY JOURNAL, 1995, 24 (02) :167-187

[3] TRANSITION FROM MOMENTUM TO BUOYANCY-CONTROLLED TURBULENT JET DIFFUSION FLAMES AND FLAME HEIGHT RELATIONSHIPS [J].

DELICHATSIOS, MA .

COMBUSTION AND FLAME, 1993, 92 (04) :349-364

[4]

Delichatsios MA, 1989, Symp. (Int.) Combust., V22, P1271, DOI DOI 10.1016/S0082-0784(89)80138-9

[5] Flame heights and fraction of stoichiometric air entrained for rectangular turbulent jet fires in a sub-atmospheric pressure [J].

Hu, Longhua ;

Zhang, Xiaochun ;

Zhang, Xiaolei ;

Lu, Kaihua ;

Guo, Zunmeng .

PROCEEDINGS OF THE COMBUSTION INSTITUTE, 2017, 36 (02) :2995-3002

[6] A re-examination of entrainment constant and an explicit model for flame heights of rectangular jet fires [J].

Hu, Longhua ;

Zhang, Xiaochun ;

Zhang, Xiaolei ;

Yang, Lizhong .

COMBUSTION AND FLAME, 2014, 161 (11) :3000-3002

[7] Flame height and lift-off of turbulent buoyant jet diffusion flames in a reduced pressure atmosphere [J].

Hu, Longhua ;

Wang, Qiang ;

Delichatsios, Michael ;

Tang, Fei ;

Zhang, Xiaochun ;

Lu, Shouxiang .

FUEL, 2013, 109 :234-240

[8] Behavior of buoyancy and momentum controlled hydrogen jets and flames emitted into the quiescent atmosphere [J].

Kim, J. S. ;

Yang, W. ;

Kim, Y. ;

Won, S. H. .

JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES, 2009, 22 (06) :943-949

[9] A comparison of the thermal and emission characteristics of co and counter swirl inverse diffusion flames [J].

Kotb, Ashraf ;

Saad, Hany .

INTERNATIONAL JOURNAL OF THERMAL SCIENCES, 2016, 109 :362-373

[10] Isothermal air jet and premixed flame jet impingement: Heat transfer characterisation and comparison [J].

Kuntikana, Pramod ;

Prabhu, S. V. .

INTERNATIONAL JOURNAL OF THERMAL SCIENCES, 2016, 100 :401-415

← 1 2 3 →