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Transition to chaos of thermocapillary convection
Physical Review E ( IF 2.4 ) Pub Date : 2022-09-16 , DOI: 10.1103/physreve.106.035103
Qi Kang 1, 2 , Jia Wang 1 , Li Duan 1, 2 , Xiang Li 3 , Liang Hu 1 , Lujun Li 1 , Shuoting Zhang 1 , Di Wu 1 , Pu Zhang 1 , Wenrui Hu 1, 2
Affiliation  

Thermocapillary convection is a common flow in space. Experiments regarding thermocapillary convection were previously carried out in a large-scale liquid bridge with a diameter of 20 mm on the Tiangong-2 space station, and the transition process to chaos was systematically studied. Under microgravity conditions, gravity is greatly weakened, and the transition process of the flow is very slow. This allows for the opportunity to study the bifurcation process in detail. It has been found that there are abundant nonlinear physical phenomena associated with the changing geometric parameters in thermocapillary convection systems. The transition mechanisms interact with each other, leading to various transition routes. The phase space trajectories, the Lyapunov exponents, and correlation dimensions are calculated to distinguish the chaotic state under a variety of conditions. Through the chaotic dynamics analysis, the chaotic characteristics of the entire transition process are quantitatively discussed.

中文翻译:

向热毛细对流混沌过渡

热毛细对流是空间中常见的流动。此前,在天宫二号空间站直径为20毫米的大型液桥上进行了热毛细对流实验,系统研究了向混沌的过渡过程。在微重力条件下,重力大大减弱,流动的转变过程非常缓慢。这使得有机会详细研究分叉过程。已经发现在热毛细对流系统中存在大量与几何参数变化相关的非线性物理现象。过渡机制相互影响,导致各种过渡路线。相空间轨迹,李雅普诺夫指数,并计算相关维度以区分各种条件下的混沌状态。通过混沌动力学分析,定量讨论了整个过渡过程的混沌特征。
更新日期:2022-09-16
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