experimental study on surface temperature oscillation modes for thin fluid layers in an open annular pool
- Paper number
IAC-13,A2,4,8,x18870
- Author
Ms. Li Zhang, China
- Coauthor
Prof. Li DUAN, National Microgravity Laboratory, Institute of Mechanics, Chinese Academy of Sciences., China
- Coauthor
Prof. Qi KANG, National Microgravity Laboratory, Institute of Mechanics, Chinese Academy of Sciences., China
- Year
2013
- Abstract
A sensitivity of 0.05℃ infrared camera is used in our work to capture the surface temperature oscillation of thin fluid layers(Pr=16,25,28) in an open annular pool which is heated from inside. Seven kinds of azimuthal oscillatory modes are observed as well as a hydrothermal wave mode. The azimuthal wave number m=0 oscillation mode (referred to as m=0) is basically found as the first transition state under various conditions and its critical temperature differences raise gradually with Pr number for the test fluid. When the temperature difference increase, m=0,6,7 act as the dominant oscillation modes for 1.5cSt and 2cSt silicone oil while modes change frequently for 1cSt silicone oil. Further analysis show for 1cSt silicone oil,when Bo$>$0.3, oscillatory flow will occur but when Bo$<$0.25, that will be hydrothermal wave. Additionally,if 3500$<$Ma$<$10000, there will be much more possibility for m=6 to show up.
- Abstract document
- Manuscript document
IAC-13,A2,4,8,x18870.pdf (🔒 authorized access only).
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