抄録
A high-frequency (20kHz) standing wave was applied to the unburned mixture upstream of a methane-air lifted jet flame using a bolt-clamped Langevin transducer (BLT) to improve stability. The flow field near the flame was visualized using acetone planar-laser-induced fluorescence (PLIF). The standing wave decreased the lifted flame height and increased the blow-off limit. The upstream flow field of the center jet then bent. This phenomenon appeared when there was a density difference between the center jet and the surrounding secondary flow. When the density of the center jet was less than that of the co-flow, the center jet was redirected to the pressure anti-node side. Conversely, when the density of the center jet was greater than that of the co-flow, the center jet was redirected to the pressure node side. This redirection tended to stabilize the laminar lifted flame.
| 本文言語 | English |
|---|---|
| ページ（範囲） | 169-177 |
| ページ数 | 9 |
| ジャーナル | Journal of Thermal Science and Technology |
| 巻 | 4 |
| 号 | 1 |
| DOI | |
| 出版ステータス | Published - 2009 |
ASJC Scopus subject areas
- 原子分子物理学および光学
- 材料科学（全般）
- 器械工学
- 工学（その他）