書誌事項
- タイトル別名
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- Effects of local flame displacement velocity on turbulent burning velocity for lean H<sub>2</sub>-C<sub>3</sub>H<sub>8</sub>-Air mixtures
抄録
This study was made to establish a prediction method of turbulent burning velocity for lean hydrogen-propane-air mixtures, with paying special attention to the importance of local burning velocity to turbulent burning velocity. In this study, lean hydrogen added propane air mixtures with different rates of addition of hydrogen δH and equivalence ratios Φ(0.5, 0.6 and 0.8) were prepared, where Φ includes fuel concentration below a lean flammability limit of propane-air mixtures. A two-dimensional sequential laser tomography technique was applied to obtain the relationship between the flame shape and the flame displacement in a constant-volume vessel. The local flame displacement velocity SF of turbulent flames was quantitatively measured as a key parameter of local burning velocity. It was found that the mean values of SF, SF,m, at the same u'/SL0 tended to increase as hydrogen was added to lean propane-air mixtures with Φ=0.8. The trends of SF,m against u'/SL0 also corresponded well to its turbulent burning velocities, regardless of δH and Φ. An attempt was also made to predict the turbulent burning velocity by some empirical equations. As a result, the predicted turbulent burning velocities, where the obtained SF,m was employed instead of SL0 as a local burning velocity, were in better agreement with experimental ones for lean hydrogen-propane-air mixtures.
収録刊行物
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- 日本機械学会論文集
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日本機械学会論文集 81 (822), 14-00318-14-00318, 2015
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
- 1390282680492524544
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- NII論文ID
- 130005005043
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- ISSN
- 21879761
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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
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- 抄録ライセンスフラグ
- 使用不可