The motion of gas bubbles downstream the aeration ramp is investigated, which is common and simple set up on the spillway floor for preventing the surface from cavitation. In this study, theoretical analysis, numerical method and experiments are combined.

• 本文采用理论分析、数值计算和试验相结合的方法；对斜坡挑坎空腔下游气泡输移问题进行了研究；斜坡挑坎是掺气减蚀中体型简单应用普遍的一种措施；实际的掺气浓度分布与本文计算结果比较吻合.