Experimental Research on Evolvement of Density Wave Oscillation in Parallel Narrow Rectangular Channels
Evolvement of density wave oscillation (DWO) in parallel narrow rectangular channels was investigated based on visual experiment with a pair of 3-side visual rectangular channels. The experimental parameter ranges were: system pressure 0.2-0.8MPa, mass flowrate 60.0-300.0kg/h, inlet subcooling 20.0-60.0℃. The evolvement procedure of bubbles and flow pattern transitions in rectangular channel (with a cross section of 40mm×3mm) was recorded by high speed digital camera, while heat flux of parallel rectangular channels increasing until DWO happened. The experimental results showed that, mass flux of the channels became unsteady as the amount of bubbles increasing. Flow transition boundaries, characteristic points of bubble behavior and DWO boundary were associated.
parallel narrow rectangular channels density wave oscillation evolvement
Yanlin Wang Bingde Chen Yanping Huang Junfeng Wang
Key Laboratory of Bubble Physics and Natural Circulation, Nuclear power institute of China P.O. Box 622-205 Chengdu, Sichuan, China, 610041
国际会议
上海
英文
388-399
2010-10-10（万方平台首次上网日期，不代表论文的发表时间）