Flow Characteristics of Gas-Liquid Two-Phase annular Flow under Microgravity (Experimental Results Utilizing a Drop Tower)

摘要

In order to predict various phenomena related to flow and heat transfer in space, it is necessary to carry out experiments under microgravity. The present work is concerned with the characteristics of gas-liquid two-phase annular flow under microgravity condition utilizing a drop tower. The experiments were carried out in a vertical transparent acrylic tube of 10.5mm. I.D. and 200mm length, using a mixture of gaseous nitrogen (GN_2) and water as the working fluid, in an annular flow region.