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  1. B200 工学部/工学研究科
  2. B200a 雑誌掲載論文
  3. 学術雑誌

Thermal structure of flame spread in partially premixed atmospheres and effects of fuel Lewis number

http://hdl.handle.net/2237/21187
http://hdl.handle.net/2237/21187
b21b42d5-2a6d-4358-a0a9-7ceead1e02fd
名前 / ファイル ライセンス アクション
122_2.pdf 122_2.pdf (208.0 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2015-02-06
タイトル
タイトル Thermal structure of flame spread in partially premixed atmospheres and effects of fuel Lewis number
言語 en
著者 Yamamoto, Kazuhiro

× Yamamoto, Kazuhiro

WEKO 55742

en Yamamoto, Kazuhiro

Search repository
Seo, Satoshi

× Seo, Satoshi

WEKO 55743

en Seo, Satoshi

Search repository
Mori, Koichi

× Mori, Koichi

WEKO 55744

en Mori, Koichi

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利
言語 en
権利情報 NOTICE: This is the author's version of a work that was accepted for publication in Proceedings of the Combustion Institute. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms, may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Proceedings of the Combustion Institute. v.35, n.3, 2015, p.2589–2596, DOI: http://dx.doi.org/10.1016/j.proci.2014.06.075
キーワード
主題Scheme Other
主題 Flame spread
キーワード
主題Scheme Other
主題 Partially premixed atmosphere
キーワード
主題Scheme Other
主題 Thermal structure
キーワード
主題Scheme Other
主題 Pyrolysis
キーワード
主題Scheme Other
主題 Lewis number
抄録
内容記述 The experimental study on the flame spread in partially premixed atmospheres was presented. Two samples of different filter thickness and density were used. Gaseous fuels of hydrogen, methane, and propane were added in the opposed air, focusing on the fuel Lewis number (Le). In the partially premixed atmospheres, the pyrolysis zone and the region of high temperature are expanded. Since the flame temperature is increased, the heat transfer rate to the preheat zone of the filter is promoted, which is confirmed by the de Ris’s formula of the thermally thin model. The heat transfer due to the heat conduction from the flame is 60–80% of total heat transfer. By comparing the results of the preheated air, the corresponding temperature rise caused by fuel addition is evaluated. For all fuels, the linear increase of temperature rise with the fuel concentration (Cf) is confirmed. However, at the fixed fuel concentration, the temperature rise depends on the fuel type. Generally, there are two factors directly related with thermal structure of combustion field such as the flame temperature. One is the heat of combustion (H), and the other is the fuel Lewis number, because the opposed flow is the lean mixture. Since Le is proportional to the inverse of the fuel diffusivity, the temperature rise could be corrected by 1/Le. Resultantly, for all fuels, the temperature rise collapses to a single curve with the correlation of (Cf ∗ H/Le). Thus, the Lewis number is a very important and useful parameter to discuss the thermal structure and the flame spread rate in partially premixed atmospheres.
言語 en
内容記述タイプ Abstract
出版者
言語 en
出版者 Elsevier
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
出版タイプ
出版タイプ AM
出版タイプResource http://purl.org/coar/version/c_ab4af688f83e57aa
DOI
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.1016/j.proci.2014.06.075
ISSN
収録物識別子タイプ PISSN
収録物識別子 1540-7489
書誌情報 en : Proceedings of the Combustion Institute

巻 35, 号 3, p. 2589-2596, 発行日 2014-07
著者版フラグ
値 author
URI
識別子 http://dx.doi.org/10.1016/j.proci.2014.06.075
識別子タイプ DOI
URI
識別子 http://hdl.handle.net/2237/21187
識別子タイプ HDL
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