Space Transportation Propulsion Research and Development Center, Space Transportation Mission Directorate, Japan Aerospace Exploration Agency (JAXA)
Space Transportation Propulsion Research and Development Center, Space Transportation Mission Directorate, Japan Aerospace Exploration Agency (JAXA)
Space Transportation Propulsion Research and Development Center, Space Transportation Mission Directorate, Japan Aerospace Exploration Agency (JAXA)
Space Transportation Propulsion Research and Development Center, Space Transportation Mission Directorate, Japan Aerospace Exploration Agency (JAXA)
IHI
Space Transportation Propulsion Research and Development Center, Space Transportation Mission Directorate, Japan Aerospace Exploration Agency (JAXA)
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-10-002
発行年
2010-05-31
抄録（英）
To estimate the influence of velocity on thermodynamic effect, we conducted the experiments, in which inducer rotational speed was changed in liquid nitrogen. The experiments in liquid nitrogen and in cold water allowed us to estimate the amplitude of the thermodynamic effect. In the experiment with lower rotational speed, suction performance was improved. The cavity length at lower rotational speed was shorter than that at higher one at the same cavitation number. Thus, we have confirmed that the degree of thermodynamic effect depends on the rotational speed as the suppression of cavity length. The temperature depression of liquid nitrogen was estimated from the comparison of the cavity length. We found that the amplitude of temperature depression became smaller when the rotation speed was lower. In addition, from the arrange data using the modified non-dimensional thermodynamic parameter SIGMA(sup *)(sub mod), the effect of nonlinearity of the vapor pressure/temperature curve should be considered to evaluate the thermodynamic effect especially in the case of higher temperature.
内容記述
形態: カラー図版あり
内容記述（英）
Physical characteristics: Original contains color illustrations
回転数がインデューサに発生するキャビテーションの熱力学的効果に与える影響
64647000.pdf
(2.72MB)
