@article{oai:jaxa.repo.nii.ac.jp:00021680, author = {五明, 泰作 and 浅野, 等 and 大田, 治彦 and 新本, 康久 and 河南, 治 and 鈴木, 康一 and 今井, 良二 and 岡, 利春 and 友部, 俊之 and 宇宿, 功史郎 and 島田, 雅喜 and 高柳, 昌弘 and 松本, 聡 and 栗本, 卓 and 高岡, 秀充 and 坂本, 道人 and 岡本, 篤 and 澤田, 健一郎 and 川崎, 春夫 and 藤井, 清澄 and 木暮, 和美 and Gomyo, Taisaku and Asano, Hitoshi and Ohta, Haruhiko and Shinmoto, Yasuhisa and Kawanami, Osamu and Suzuki, Koichi and Imai, Ryoji and Oka, Toshiharu and Tomobe, Toshiyuki and Usuku, Koshiro and Shimada, Masaki and Takayanagi, Masahiro and Matsumoto, Satoshi and Kurimoto, Takashi and Takaoka, Hidemitsu and Sakamoto, Michito and Okamoto, Atsushi and Sawada, Kenichiro and Kawasaki, Haruo and Fujii, Kiyosumi and Kogure, Kazumi}, issue = {1}, journal = {International Journal of Microgravity Science and Application (IJMSA)}, month = {Jan}, note = {An observation section has been developed for the detail observation of gas-liquid interfacial structure in boiling and two-phase flow experiments onboard International Space Station. A stereoscopic photography method was applied for 3D measurement using one high frame-rate camera, and the accuracy in measurement of liquid film thickness was evaluated. It was confirmed in the preliminary experiment that liquid film thickness could be measured from images within plus or minus 5 % accuracy. Moreover, to evaluate the development of the flow structure from the exit of the heating section, flow observation and cross-sectional average void fraction measurement was performed at four locations at the downstream of the heating section. As the result, under the condition where slug flow was observed in the developed region, the fluctuation band of void fraction was small just at downstream of the exit of the heating section due to many small bubbles in liquid slugs. Under the conditions where annular flow was observed in the developed region, annular flow had been already formed at the exit, and then liquid film thickness became thicker., 形態: カラー図版あり, Physical characteristics: Original contains color illustrations, 資料番号: DS1540521000}, pages = {330104-1--330104-10}, title = {Development of Boiling and Two-Phase Flow Experiments on Board ISS: Void Fraction Characteristics in the Observation Section just at the Downstream of the Heating Section}, volume = {33}, year = {2016} }