Three kinds of possible flow modes were observed, namely, subcooled boiling oscillation under lower heating flux, stable flow and heat transfer region and dry-out mode under higher heating flux.

• 在低功率区,过冷沸腾和携带机制造成启动过程的两相流振荡;进入稳定工况区后,系统具有自调适能力,能够维持恒定的循环质量流率;