### Abstract

Unsteady motions of a Bunsen-type premixed flame tip with burner rotation were studied from a viewpoint of nonlinear dynamics. The mean velocity from burner tube U was varied from 0.6 to 1.2 m/sec, and rotating speed of the burner N was varied from 0 to 2800 rpm. A rich methane/air mixture (equivalence ratio φ = 1.43, Lewis number (Le) > 1) was used. Under the condition of Le > 1, an axisymmetric oscillating flame was formed between a conical flame and a plateau flame at U = 0.6 m/sec and swirl number = 1.14. As U and N increased and constant S, the oscillating flame tip motion became unstable. The flame tip motion with burner rotation under the conditions Le > 1 varied from periodic to non-periodic, i.e., to chaotic. The analysis based on deterministic chaos theory, such as correlation dimension, was valid for quantifying unsteady flame motions. Original is an abstract.

Original language | English |
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Title of host publication | International Symposium on Combustion Abstracts of Accepted Papers |

Pages | 43 |

Number of pages | 1 |

Publication status | Published - 2002 |

Externally published | Yes |

Event | 29th International Symposium on Combustion - Sapporo, Japan Duration: 2002 Jul 21 → 2002 Jul 26 |

### Other

Other | 29th International Symposium on Combustion |
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Country | Japan |

City | Sapporo |

Period | 02/7/21 → 02/7/26 |

### Fingerprint

### ASJC Scopus subject areas

- Engineering(all)

### Cite this

*International Symposium on Combustion Abstracts of Accepted Papers*(pp. 43)

**Transition from periodic to non-periodic motion of a bunsen-type premixed flame tip with burner rotation.** / Gotoda, Hiroshi; Ueda, Toshihisa.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

*International Symposium on Combustion Abstracts of Accepted Papers.*pp. 43, 29th International Symposium on Combustion, Sapporo, Japan, 02/7/21.

}

TY - GEN

T1 - Transition from periodic to non-periodic motion of a bunsen-type premixed flame tip with burner rotation

AU - Gotoda, Hiroshi

AU - Ueda, Toshihisa

PY - 2002

Y1 - 2002

N2 - Unsteady motions of a Bunsen-type premixed flame tip with burner rotation were studied from a viewpoint of nonlinear dynamics. The mean velocity from burner tube U was varied from 0.6 to 1.2 m/sec, and rotating speed of the burner N was varied from 0 to 2800 rpm. A rich methane/air mixture (equivalence ratio φ = 1.43, Lewis number (Le) > 1) was used. Under the condition of Le > 1, an axisymmetric oscillating flame was formed between a conical flame and a plateau flame at U = 0.6 m/sec and swirl number = 1.14. As U and N increased and constant S, the oscillating flame tip motion became unstable. The flame tip motion with burner rotation under the conditions Le > 1 varied from periodic to non-periodic, i.e., to chaotic. The analysis based on deterministic chaos theory, such as correlation dimension, was valid for quantifying unsteady flame motions. Original is an abstract.

AB - Unsteady motions of a Bunsen-type premixed flame tip with burner rotation were studied from a viewpoint of nonlinear dynamics. The mean velocity from burner tube U was varied from 0.6 to 1.2 m/sec, and rotating speed of the burner N was varied from 0 to 2800 rpm. A rich methane/air mixture (equivalence ratio φ = 1.43, Lewis number (Le) > 1) was used. Under the condition of Le > 1, an axisymmetric oscillating flame was formed between a conical flame and a plateau flame at U = 0.6 m/sec and swirl number = 1.14. As U and N increased and constant S, the oscillating flame tip motion became unstable. The flame tip motion with burner rotation under the conditions Le > 1 varied from periodic to non-periodic, i.e., to chaotic. The analysis based on deterministic chaos theory, such as correlation dimension, was valid for quantifying unsteady flame motions. Original is an abstract.

UR - http://www.scopus.com/inward/record.url?scp=0036932330&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036932330&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:0036932330

SP - 43

BT - International Symposium on Combustion Abstracts of Accepted Papers

ER -