Space Transportation Proplusion Research and Development Center, Space Transportation Mission Directorate, Japan Aerospace Exploration Agency (JAXA)
Foundation for Promotion of Japan Aerospace Technology
Space Transportation Proplusion Research and Development Center, Space Transportation Mission Directorate, Japan Aerospace Exploration Agency (JAXA)
Space Transportation Proplusion Research and Development Center, Space Transportation Mission Directorate, Japan Aerospace Exploration Agency (JAXA)
Space Transportation Proplusion Research and Development Center, Space Transportation Mission Directorate, Japan Aerospace Exploration Agency (JAXA)
Dynax
出版者
宇宙航空研究開発機構
出版者（英）
Japan Aerospace Exploration Agency (JAXA)
雑誌名
宇宙航空研究開発機構研究開発資料
雑誌名(英)
JAXA Research and Development Memorandum
巻
JAXA-RM-09-010
発行年
2010-03-31
抄録（英）
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.
内容記述
形態: カラー図版あり
内容記述（英）
Physical characteristics: Original contains color illustrations
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
64645000.pdf
(4.64MB)
