@techreport{oai:jaxa.repo.nii.ac.jp:00002578, author = {渡邉, 光男 and 永浦, 克司 and 長谷川, 敏 and 新井山, 一樹 and 吉田, 義樹 and 杉田, 栄一郎 and Watanabe, Mitsuo and Nagaura, Katsuji and Hasegawa, Satoshi and Niiyama, Kazuki and Yoshida, Yoshiki and Sugita, Eiichiro}, month = {Mar}, note = {Cavitation in cryogenic fluids, e.g., propellants of rocket engines, has a thermodynamic effect because of thermal imbalance around the cavity. The thermodynamic effect on cavitation is beneficial in that it improves cavitation performances due to the delay of cavity growth. In the present work, two experiments were conducted on a three-bladed cavitating inducer in which liquid nitrogen and cold water as working flow were used in order to confirm the thermal effects. Aspects of the cavitation in the inducer were observed by direct optical visualization both in liquid nitrogen and water. The bubbles of the tip vortex cavitation were very fine, and the thickness of the cavitation on the blade surface was very thin in liquid nitrogen compared with those in cold water. The growth of the cavity length along the blade was much suppressed as decrease the cavitation numbers in liquid nitrogen., 形態: カラー図版あり, Physical characteristics: Original contains color illustrations, 資料番号: AA0064645000, レポート番号: JAXA-RM-09-010}, title = {極低温流体中でインデューサに発生するキャビテーションの直接可視化: その3 液体窒素中でのキャビテーションの可視化試験}, year = {2010} }