In two-phase flow, when the flow is in the annular pattern flow region, the dryout phenomena will present if the annular liquid film evaporated completely.

• 传热管件在高干度的管内汽液两相强迫流动沸腾区域中，由于环状液膜蒸干会发生干涸现象，在干涸点处加热壁面的温度会急剧升高，这会造成传热设备的烧毁。