| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Oscillatory and Chaotic Buoyant-Thermocapillary Convection in the Large-Scale Liquid Bridge |
| Jia Wang1,2, Li Duan1,2**, Qi Kang1,2** |
1Key Laboratory of Microgravity, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190
2School of Engineering Sciences, University of Chinese Academy of Sciences, Beijing 100049
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| Cite this article: |
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Jia Wang, Li Duan, Qi Kang 2017 Chin. Phys. Lett. 34 074703 |
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Abstract To cooperate with Chinese TG-2 space experiment project, the transition process from steady to regular oscillatory flow, and finally to chaos is experimentally studied in buoyant-thermocapillary convection. The onset of oscillation and further transitional convective behavior are detected by measuring the temperature in large-scale liquid bridge of 2cSt silicone oil. To identify the various dynamical regimes, the Fourier transform and fractal theory are used to reveal the frequency and amplitude characteristics of the flow motion. The experimental results indicate the co-existence of quasi-periodic and the Feigenbaum bifurcation in chaos.
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Received: 15 March 2017
Published: 23 June 2017
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| PACS: |
47.27.Cn
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(Transition to turbulence)
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47.20.Dr
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(Surface-tension-driven instability)
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47.20.Ky
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(Nonlinearity, bifurcation, and symmetry breaking)
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| Fund: Supported by the China Manned Space Engineering Program (TG-2), the Strategic Priority Research Program on Space Science of Chinese Academy of Sciences: SJ-10 Recoverable Scientific Experiment Satellite under Grant Nos XDA04020405 and XDA04020202-05, and the National Natural Science Foundation of China under Grant No11372328. |
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