Effects of local flame displacement velocity on turbulent burning velocity for lean H2-C3H8-Air mixtures
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 r...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | Japanese |
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The Japan Society of Mechanical Engineers
2015-01-01
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| Series: | Nihon Kikai Gakkai ronbunshu |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/transjsme/81/822/81_14-00318/_pdf/-char/en |
| _version_ | 1798018089070100480 |
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| author | Masaya NAKAHARA Yoshinori MATSUO Yoshio OMOTO Tsubasa SAEKI Fumiaki ABE |
| author_facet | Masaya NAKAHARA Yoshinori MATSUO Yoshio OMOTO Tsubasa SAEKI Fumiaki ABE |
| author_sort | Masaya NAKAHARA |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-04-11T16:18:08Z |
| format | Article |
| id | doaj.art-dafcc5cd69244b95abda89bff6b868bd |
| institution | Directory Open Access Journal |
| issn | 2187-9761 |
| language | Japanese |
| last_indexed | 2024-04-11T16:18:08Z |
| publishDate | 2015-01-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Nihon Kikai Gakkai ronbunshu |
| spelling | doaj.art-dafcc5cd69244b95abda89bff6b868bd2022-12-22T04:14:27ZjpnThe Japan Society of Mechanical EngineersNihon Kikai Gakkai ronbunshu2187-97612015-01-018182214-0031814-0031810.1299/transjsme.14-00318transjsmeEffects of local flame displacement velocity on turbulent burning velocity for lean H2-C3H8-Air mixturesMasaya NAKAHARA0Yoshinori MATSUO1Yoshio OMOTO2Tsubasa SAEKI3Fumiaki ABE4Ehime University, Graduate school of Science and EngineeringEhime University, Graduate school of Science and EngineeringEhime University, Graduate school of Science and EngineeringEhime University, Graduate school of Science and EngineeringEhime University, Faculty of EngineeringThis 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.https://www.jstage.jst.go.jp/article/transjsme/81/822/81_14-00318/_pdf/-char/eninternal combustion enginepremixed combustionhydrogen additionturbulent burning velocitylocal burning velocitylean propane combustion |
| spellingShingle | Masaya NAKAHARA Yoshinori MATSUO Yoshio OMOTO Tsubasa SAEKI Fumiaki ABE Effects of local flame displacement velocity on turbulent burning velocity for lean H2-C3H8-Air mixtures Nihon Kikai Gakkai ronbunshu internal combustion engine premixed combustion hydrogen addition turbulent burning velocity local burning velocity lean propane combustion |
| title | Effects of local flame displacement velocity on turbulent burning velocity for lean H2-C3H8-Air mixtures |
| title_full | Effects of local flame displacement velocity on turbulent burning velocity for lean H2-C3H8-Air mixtures |
| title_fullStr | Effects of local flame displacement velocity on turbulent burning velocity for lean H2-C3H8-Air mixtures |
| title_full_unstemmed | Effects of local flame displacement velocity on turbulent burning velocity for lean H2-C3H8-Air mixtures |
| title_short | Effects of local flame displacement velocity on turbulent burning velocity for lean H2-C3H8-Air mixtures |
| title_sort | effects of local flame displacement velocity on turbulent burning velocity for lean h2 c3h8 air mixtures |
| topic | internal combustion engine premixed combustion hydrogen addition turbulent burning velocity local burning velocity lean propane combustion |
| url | https://www.jstage.jst.go.jp/article/transjsme/81/822/81_14-00318/_pdf/-char/en |
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