蜡烛振荡燃烧与相互耦合的研究  

Study of oscillating burning and coupling of candles

作　　者：方骏 庄伟[1] FANG Jun;ZHUANG Wei(School of Physics and Technology,Nanjing Normal University,Nanjing 210023,China)

机构地区：[1]南京师范大学物理科学与技术学院,江苏南京210023

出　　处：《物理实验》2023年第10期58-63,共6页Physics Experimentation

摘　　要：当几支蜡烛相互靠近时,由于烛火附近空气流动的状态发生变化,产生涡旋,火焰产生周期性振荡.2组振荡器由接近逐渐远离,随着距离的增大,逐步产生同相振荡、反相振荡和振幅死亡.通过纹影装置直接验证了涡旋是振荡器火焰产生振荡的原因,通过遍历蜡烛火焰二值图的方式得到了火焰面积与时间的图像,对其进行快速傅里叶变换后得到振荡器的振荡频率,并以此研究振荡器的振荡情况与距离的关系.The vortex was caused by the change of the flow states of the air near the burning candles while there were several candles moving nearer each other.And equivalently the vortex could bring about the periodical oscillation of the flame.When two sets of oscillators were gradually moving away from a closer distance,the synchronous oscillation,antiphase oscillation and amplitude death would appear sequentially with the increase of the distance between the oscillators.It was verified to be the vortex that caused the oscillation of the flames of the oscillators.The dependence of the flame areas on time was obtained by iterating through the binary image of the candle flame.The oscillating frequency was given by fast Fourier transform operating on the relation between the flame area and time.And thus the relationship between the oscillation and the distance could be studied.

关 键 词：蜡烛火焰 振荡燃烧 涡旋扩散 

分 类 号：O552.32[理学—热学与物质分子运动论]