Oscillation Transition Routes of Buoyant-Thermocapillary Convection in Annular Liquid Layers
There are various oscillation transition routes of buoyant-thermocapillary convection in an annular liquid layer. Three types of transition routes including quasi-periodic bifurcation, period-doubling bifurcation and tangent bifurcation have been observed. In our ground experiments, the depth of liquid layer is in a range of 1.6–2.4 mm. The silicone oil with Prandtl number of 28.6 is selected as the liquid medium. The temperature oscillation is detected by a single-point temperature measuring system and the surface oscillation is measured by a laser displacement-sensor with high resolution. The step-heating mode is adopted in the experiments. Transition routes of temperature oscillation and surface oscillation are studied systematically, and the relationship between them is discussed, too.
KeywordsTransition route Buoyant-thermocapillary convection Bifurcation Temperature oscillation Surface oscillation Step-heating mode
This work is funded by Joint fund of National Natural Science Foundation of China: Study on the oscillations, transition routes and volume effects of thermocapillary convection (U1738116), Chinese Academy of Sciences: SJ-10 Satellite Program under grant No. XDA04020405 and XDA04020202-05, and China Manned Space Engineering program (TG-2).
- Hu, W.R., Tang, Z.M.: Floating Zone Convection in Crystal Growth Modeling. Science Press, Beijing (2003)Google Scholar
- Jiang, H., Duan, L., Kang, Q.: Instabilities of thermocapillary-buoyancy convection in open rectangular liquid layers. Chin. Phys. B 26(11), 316–323 (2017b)Google Scholar
- Napolitano, L.G., Monti, R., Russo, G.: Some results of the Marangoni free convection experiment. In: European Symposium on Material Sciences under Microgravity, pp 15–22 (1984)Google Scholar
- Stella, F., Bucchignani, E.: Rayleigh-Benard convection in limited domains: Part 1—Oscillatory flow. Num. Heat Transf. Part A-Appl. 36(1), 1–16 (1999)Google Scholar
- Yasnou, V., Gaponenko, Y., Mialdun, A., et al.: Influence of a coaxial gas flow on the evolution of oscillatory states in a liquid bridge. Int. J. Heat Mass Transf. 123, 747–759 (2018)Google Scholar