書誌事項
- タイトル別名
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- Effects of Burned Gas Dilution on the Ignition Delay Time of High Temperature Air Combustion with a Parallel Jet Burner
説明
Objectives of this study are to suggest a new method to predict the stability limit of high temperature air combustion. For the first stage of this study, we investigated the effects of dilution by the burned gas on the ignition delay time. Dilution ratio is introduced to quantify the magnitude of dilution in high temperature air combustion with a parallel jet burner. The effects of dilution on the ignition delay time are evaluated by a chemical characteristic time with the dilution ratio. Flamelet equations are solved numerically to investigate the effects of dilution on the ignition delay time. Ignition time is defined as the time at which a temporal increase in maximum temperature becomes its maximum. The ignition delay time based on the maximum temperature includes durations of radical pool growth and of most reactive region movement. The ignition delay time based on the maximum value of Damköhler number corresponds to the duration of radical pool growth. With an increase in the dilution ratio, the ignition delay time based on the Damköhler number decreases, and then increases. This trend is attributed to the increase in temperature of mixture and the decrease in reactant concentration with the dilution ratio. The introduction of chemical characteristic time has generalized the ignition delay time.
収録刊行物
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- 日本機械学会論文集Ｂ編
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日本機械学会論文集Ｂ編 78 (789), 1127-1142, 2012
一般社団法人 日本機械学会
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詳細情報 詳細情報について
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- CRID
- 1390282681238449920
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- NII論文ID
- 130002050753
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- ISSN
- 18848346
- 03875016
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
- OpenAIRE
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- 抄録ライセンスフラグ
- 使用不可