Overview Of "Dynamic Surf" Project In Kibo-Dynamic Behavior Of Large-Scale Thermocapillary Liquid Bridges In Microgravity

This paper reports the overview of Dynamic Suif project conducted in the Japanese Experiment Module Kibo on board the International Space Station (ISS), especially focusing on the experimental conditions, the measurement systems, and the g-jitter effects. Oscillatory Marangoni convection in the liquid bridge is associated with oscillatory motion of the liquid-gas interface due to velocity oscillation inside the liquid bridge, where such a motion is called dynamic surface deformation (DSD). The present project aims at understanding the DSD effect in the transition mechanisms of temperature gradient-driven Marangoni convection in large-scale liquid bridges of high-Prandtl-number fluids through the long-term microgravity experiments on board the ISS. A series of microgravity experiments have been conducted in the period from September 2013 to November 2016 to understand the instability mechanisms and the role of DSD in Marangoni convection.