Bubble Parameters in Vertical Subcooled Boiling Flow
A series of experiments was carried out to investigate the bubble nucleation to lift-off phenomena for a subcooled boiling flow in a vertical annulus channel. A high speed digital video camera was used to capture the dynamics of the bubble nucleation to lift-off process. A total of 134 recordings were made, and the bubble lift-off diameter and the bubble nucleation frequency were evaluated for 73 recordings up to now. The fundamental features of the lift-off diameter and nucleation frequency were addressed based on the present observation. A database for the bubble lift-off diameter was built by gathering and summarizing the data of Prodanovic et al., Situ et al., and the present work. The prediction capability of Unal’s model, Situ et al.’s model, and Prodanovic et al.’s correlation was evaluated against the database. The best prediction result was obtained by modifying the wall superheat correlation in Unal’s model.
Lift-off Diameter Nucleation Frequency Subcooled Boiling Flow
In-Cheol Chu Chul-Hwa Song
Korea Atomic Energy Research Institute 1045 Daedeok-daero, Yuseong-gu, Daejon, 305-353, Korea
国际会议
上海
英文
1930-1942
2010-10-10（万方平台首次上网日期，不代表论文的发表时间）