为了深入地认识泄水建筑物掺气水流的复氧过程,该文应用水气两相流混合模型计算了包括水垫塘在内的泄水建筑物水体的掺气浓度、流速、紊动粘性系数等特征参数。应用气泡界面传质理论建立了掺气水流的溶解氧对流扩散方程。不同试验工况的结果验证了掺气复氧数学模型的合理性和可靠性,表明该模型符合坝身泄流的特点,充分体现了过坝水流对大气的卷吸与紊动混掺。 In order to deeply understand the reoxygenation process of aerated water flow in drainage structures, this paper calculates the aeration concentration, velocity of flow, turbulent viscosity Coefficient and other characteristic parameters. The bubble diffusion diffusion equation of aerated water was established by using the mass transfer theory of bubble interface. The results of different test conditions validate the rationality and reliability of the aeration and reoxygenation mathematical model, which shows that the model accords with the characteristics of the dam body discharge and embodies the entrainment and turbulent mixing of the dam flow to the atmosphere.