Experimental study was performed using water as working medium to investigate the flow instability in a vertical narrow annuli with both subcooled and saturated boilings.

以水,分别在过冷和饱和条件下对竖直环流道行自然对流沸腾流动不稳定性实验,观测到流道饱和沸腾时所特有的蒸干型流动不稳定性。