微小重力下の減圧過熱液体からの気泡生成および成長

概要

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Flashing experiments under microgravity condition have been conducted with the depressurizedsuperheated liquid im AK-225 by using the expetimental rack of the Japan Microgravity Ccnter(JAMIC) and Hokkaido National Indusuial Research lnstitute (HNIRI). Microgravity environmentprovides unique experimental opportunity for the study of dynamical and thermodynarnical nonequilibrium homogeneous two-phase fluid motion， because of the restrained effect of disturbanceinduced by buoyancy over the fiow field A rapid depressurization process of an alternative liquidfreon in a pressure vessel was observed after quick opening of a solenoid valve connected to thevessel These experiments focussed on the triggered points at incipient bubble formation and growthon depressurized process in order to compare with difference in behavior between under microgravityand normalgravity. The experimental result was shown that bubble behaviors observed undermicrogravity condition appeared to be relatively smaller than those of normalgravity owing to thelack of agitating effect by rising bubbles through the bulk liquid.
室蘭工業大学の論文
2001-11-30