Thermocapillary Convection Experiment facility of an open cylindrical annuli for SJ-10 satellite
- Paper number
IAC-14,A2,3,13,x25278
- Author
Prof. Qi KANG, National Microgravity Laboratory, Institute of Mechanics, Chinese Academy of Sciences., China
- Coauthor
Ms. Li Zhang, China
- Coauthor
Prof. Li DUAN, National Microgravity Laboratory, Institute of Mechanics, Chinese Academy of Sciences., China
- Year
2014
- Abstract
During the past decades, thermocapillary convection has drawn much attention for its internal scientific rules and practical research value. Lots of works have been done including a lot of theoretic analysis, numerical calculations as well as ground experiments. Subjected to a radial temperature difference, the liquid layer’s fluid motion in an open cylindrical annuli will occur as a convection driven by temperature-induced interfacial-tension variations. A space experiment about thermocapillary convection in an open cylindrical annuli will be conduced on SJ-10 satellite, which is a Chinese recoverable satellite launched in 2015. The outer radius of the annuli test cell {\it R} is 20mm, the inner radius {\it r} is 4mm, the depth {\it H} is 12mm; the liquid layer is heated by inner rod (copper), cooled by 6 semiconductor coolers connected to the outer wall. The test fluid will be 2cSt silicone oil or 5cSt silicone oil. A set of facility has been established, which includes a cylindrical annuli liquid test system including liquid storage and filling liquid system, two sets of temperature controlling system and a set of temperature measurement system, a thermal infrared imager, a high-precision displacement sensor to surface oscillation system, and experiment controlling system. By the facility some experiments have been done on ground in order to comparing the experiment results of $\mu${\it g} and 1{\it g}. From the ground experiment, the temperature oscillation, surface oscillation, and the flow pattern transfer have been observed.- Abstract document
- Manuscript document
(absent)