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The fifth series of Chaos, Turbulence and its Transition Process in Marangoni Convection (Marangoni Exp/MEIS) has started on board Kibo
All times are Japan Standard Time (JST)
The fifth series of Chaos, Turbulence and its Transition Process in Marangoni Convection (Marangoni Exp/MEIS)*, the first theme of the Marangoni Experiments which uses the Fluid Physics Experiment Facility (FPEF) on board Kibo, has started.
* Principal Investigator (PI): Koichi Nishino, Professor, Yokohama National University
The MEIS series 5 has started at 9:50 a.m. on June 26, 2012, following a remote checkout of the experiment facility from the Tsukuba Space Center (TKSC).
Marangoni convection experiments investigate the change in internal flow of a large liquid bridge made of silicon oil and the change of temperature distributions along with the flow change.
The present theme consists of a total of five series of experiments; and this fifth series attempts to observe the transition process of convection between critical point to high Marangoni number condition in a 5-cm diameter silicon bridge and to see if Particle Accumulation Structures (PAS) occur under each condition.
| Series | Experiment outline |
|---|---|
| 1 | Liquid bridge of silicone oil was created and the internal flow patterns were observed. |
| 2 | Variation of flow patterns (change in the flow pattern from stable flow to oscillatory flow) was observed. Surface velocity of Marangoni convection was quantitatively examined. |
| 3 | How liquid viscosity and the size of the liquid bridge affect flow patterns were observed by producing a 5-cm diameter liquid bridge. |
| 4 | Observed various flow patterns and the temperature distribution by increasing temperature gradient and make the convection stronger. |
The data acquired for each series is being analyzed. The fifth series will continue until mid February, 2013.
The liquid bridge (Credit: JAXA/Yokohama National University/Tokyo University of Science)
See more details of this experiment: /en/kiboexp/theme/first/marangoni/index.html
*All times are Japan Standard Time (JST)
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