Abstract
The total dissolved gas (TDG) supersaturation observed in a spillway that flows downstream various hydraulic structures has long been recognized as having a negative environmental effect on fish and aquatic organisms. This paper focuses on learning the mass transfer of supersaturation total dissolved gas downstream and the rule of mass transfer between air-water interfaces. Besides, the three main coefficients of mass transfer are concluded: the surface mass transfer coefficient, the bubble interface mass transfer coefficient, and the dissipation coefficient and relevant transport process model. These can provide a foundation to analyze the supersaturation of high dam in near future.
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