TY - JOUR
T1 - Space experiment on the instability of Marangoni convection in large liquid bridge - MEIS-4
T2 - 4th International Symposium on Physical Sciences in Space, ISPS-4
AU - Yano, Taishi
AU - Nishino, Koichi
AU - Kawamura, Hiroshi
AU - Ueno, Ichiro
AU - Matsumoto, Satoshi
AU - Ohnishi, Mitsuru
AU - Sakurai, Masato
PY - 2011
Y1 - 2011
N2 - Microgravity experiments on the thermocapillary convection in liquid bridge, called Marangoni Experiment in Space (MEIS), are carried out in "KIBO" of ISS. Three series of experiments, MEIS-1, 2, and 4, have been conducted so far. This paper reports the results obtained from MEIS-4, in which 20cSt silicone oil (Pr=207) is used to generate large liquid bridges. They are suspended between coaxial disks that are 50mm in diameter, with their maximum length equal to 62.5mm. MEIS-4 aims at (1) determining the critical temperature difference for the onset of oscillatory flow; (2) realizing high Marangoni number conditions for high Pr fluid; (3) clarifying the effects of volume ratio, heating rate, hysteresis, and cooled disk temperature; and (4) observing whether the hydrothermal wave with azimuthal mode number m=0 appears or not. The main results are presented and compared with those obtained in MEIS-1 and 2, which utilized liquid bridges of 5cSt silicone oil (Pr=67).
AB - Microgravity experiments on the thermocapillary convection in liquid bridge, called Marangoni Experiment in Space (MEIS), are carried out in "KIBO" of ISS. Three series of experiments, MEIS-1, 2, and 4, have been conducted so far. This paper reports the results obtained from MEIS-4, in which 20cSt silicone oil (Pr=207) is used to generate large liquid bridges. They are suspended between coaxial disks that are 50mm in diameter, with their maximum length equal to 62.5mm. MEIS-4 aims at (1) determining the critical temperature difference for the onset of oscillatory flow; (2) realizing high Marangoni number conditions for high Pr fluid; (3) clarifying the effects of volume ratio, heating rate, hysteresis, and cooled disk temperature; and (4) observing whether the hydrothermal wave with azimuthal mode number m=0 appears or not. The main results are presented and compared with those obtained in MEIS-1 and 2, which utilized liquid bridges of 5cSt silicone oil (Pr=67).
UR - http://www.scopus.com/inward/record.url?scp=84856339188&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/327/1/012029
DO - 10.1088/1742-6596/327/1/012029
M3 - Conference article
AN - SCOPUS:84856339188
SN - 1742-6588
VL - 327
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012029
Y2 - 11 July 2011 through 15 July 2011
ER -