三重闪烁浮力扩散火焰中的涡旋相互作用
Vortex Interaction in Triple Flickering Buoyant Diffusion Flames
AI总结：
本文通过计算复现三重闪烁浮力扩散火焰的四种动力学模式，并从涡量重联与涡致流动角度解释了同相、死亡、旋转和部分同相模式的形成机制。
摘要：
本文将三重闪烁浮力扩散火焰作为耦合振子的非线性动力系统进行了计算研究。先前蜡烛火焰实验中观察到的四种不同动力学模式（同相、死亡、旋转和部分同相）在甲烷射流扩散火焰中得到了计算复现。这四种模式从涡旋相互作用的角度，特别是涡量重联和涡致流动的角度进行了解释。具体而言，同相模式是由三个环形涡旋重联形成的三叶涡旋周期性脱落引起的；死亡模式是由于小雷诺数下涡旋脱落受到抑制所致；旋转模式表现为三个环形涡旋以恒定相位差交替脱落；部分同相模式是由两个环形涡旋的涡量重联引起的，另一个涡旋则以反相方式脱落。
英文摘要：
Triple flickering buoyant diffusion flames as a nonlinear dynamical system of coupled oscillators were computationally investigated. The four distinct dynamical modes (in-phase, death, rotation, and partial in-phase) observed in the previous candle-flame experiments were computationally reproduced for jet diffusion flames of methane. The four modes were interpreted from the perspective of vortex interaction and particularly of vorticity reconnection and vortex-induced flow. Specifically, the in-phase mode is caused by the periodic shedding of the trefoil vortex formed by the reconnection of three toroidal vortices; the death mode is due to the suppression of vortex shedding at small Reynolds numbers; the rotation mode appears as three toroidal vortices alternatively shed off with a constant phase difference; the partial in-phase model is caused by the vorticity reconnection of two toroidal vortices leaving another one shedding off in anti-phase.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
