Advanced

Experimental Investigation on Effects of Central Air Jet on the Bluff-body Stabilized Premixed Methane-air Flame

Tong, Yiheng LU ; Li, Mao LU ; Thern, Marcus LU ; Klingmann, Jens LU ; Weng, Wubin LU ; Chen, Shuang LU and Li, Zhongshan LU (2017) In Energy Procedia 107. p.23-32
Abstract

Flame stabilized by a bluff-body is a common scene in many engineering applications due to the enhanced mixing characteristics, improved flame stability, and ease of combustion control. We recently designed a burner which has a conical bluff body with a central air injector. In the current work, effects of the central air jet on the heat load of the bluff body, the flame structures and the flame blowoff limits were investigated. It was found that the central air jet can significantly reduce the heat load to the bluff body. It is a considerable solution to the problem caused by the high heat load in practical applications. The flame structures and blowout limits were altered with the addition of central air jet as well. Different blowout... (More)

Flame stabilized by a bluff-body is a common scene in many engineering applications due to the enhanced mixing characteristics, improved flame stability, and ease of combustion control. We recently designed a burner which has a conical bluff body with a central air injector. In the current work, effects of the central air jet on the heat load of the bluff body, the flame structures and the flame blowoff limits were investigated. It was found that the central air jet can significantly reduce the heat load to the bluff body. It is a considerable solution to the problem caused by the high heat load in practical applications. The flame structures and blowout limits were altered with the addition of central air jet as well. Different blowout behaviors caused by the air jet were observed and reported. The bluff-body could be cooled down by the center air injection but then it seems not to stabilize the flame any more.

(Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Blow off, bluff-body, flame structures, premixed combustion
in
Energy Procedia
volume
107
pages
10 pages
publisher
Elsevier
external identifiers
  • scopus:85015378936
  • wos:000400640900004
ISSN
1876-6102
DOI
10.1016/j.egypro.2016.12.125
language
English
LU publication?
yes
id
d49f1b55-5a68-49c8-82ee-c01242f1d905
date added to LUP
2017-05-25 09:40:35
date last changed
2017-09-18 11:37:34
@article{d49f1b55-5a68-49c8-82ee-c01242f1d905,
  abstract     = {<p>Flame stabilized by a bluff-body is a common scene in many engineering applications due to the enhanced mixing characteristics, improved flame stability, and ease of combustion control. We recently designed a burner which has a conical bluff body with a central air injector. In the current work, effects of the central air jet on the heat load of the bluff body, the flame structures and the flame blowoff limits were investigated. It was found that the central air jet can significantly reduce the heat load to the bluff body. It is a considerable solution to the problem caused by the high heat load in practical applications. The flame structures and blowout limits were altered with the addition of central air jet as well. Different blowout behaviors caused by the air jet were observed and reported. The bluff-body could be cooled down by the center air injection but then it seems not to stabilize the flame any more.</p>},
  author       = {Tong, Yiheng and Li, Mao and Thern, Marcus and Klingmann, Jens and Weng, Wubin and Chen, Shuang and Li, Zhongshan},
  issn         = {1876-6102},
  keyword      = {Blow off,bluff-body,flame structures,premixed combustion},
  language     = {eng},
  month        = {02},
  pages        = {23--32},
  publisher    = {Elsevier},
  series       = {Energy Procedia},
  title        = {Experimental Investigation on Effects of Central Air Jet on the Bluff-body Stabilized Premixed Methane-air Flame},
  url          = {http://dx.doi.org/10.1016/j.egypro.2016.12.125},
  volume       = {107},
  year         = {2017},
}