摘要
同步蜡烛，指的是当几支彼此邻近的蜡烛燃烧时，可以观察到振荡的火焰，两个这样的振荡可以相互耦合，导致同相或反相。本文采取控制变量法对单个蜡烛振子产生振荡的原因，以及不同的间隔距离的蜡烛产生的同相或反相振荡现象进行探究，发现蜡烛振荡耦合所表现出来的现象与蜡烛之间的距离有关，使用FDS软件对火焰的燃烧情况进行了模拟，同样得到了同相和反相振动的结果。考虑到空气的气体扩散系数比较低，蜡烛燃烧时等温线较平稳，产生振荡的原因最有可能是热辐射。
关键词： 同步蜡烛；火焰震荡；同相反相；FDS（Fire Dynamics Simulator）
Abstract
The so-called synchronous candle refers to the flame that can be observed to oscillate when several adjacent candles are burning. Two such oscillations can be coupled with each other, leading to in-phase or anti phase. In this paper, the control variable method is used to study the reason of the oscillation of a single oscillator and the phenomenon of in-phase or anti phase oscillation of candles with different separation distance. It is found that the phenomenon of the oscillation coupling of regular candles is related to the distance between candles. FDS software is used to simulate the combustion of flame, and the results of in-phase and anti-phase vibration are also obtained. Considering that the gas diffusion coefficient of the air is too low and the isotherm of the candle is relatively stable, the most likely cause of synchronization or inverse synchronization is thermal radiation.
Key words： Synchronous candle; Flame oscillation; In phase and anti phase; FDS (Fire Dynamics Simulator)
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