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It is suggested that the cause of self-aeration in open-channel flow occurs when the turbulent normal stress exceeds the gravimetric pressure. A criterion for the start of self-aeration is established on this basis. A computational four-layer model of an aerated flow is proposed. It is also proposed that the equation of turbulent diffusion be used to calculate the distribution of air concentration along the normal to the bottom. Results are compared with experimental distributions of concentrations, and a satisfactory relationship is obtained.
It is suggested that the cause of self-aeration in open-channel flow occurs when the turbulent normal stress exceeds the gravimetric pressure. A criterion for the start of self-aeration is established on this basis. A computational four-layer model of an aerated flow is proposed. It is also proposed that the equation of turbulent diffusion be used to calculate the distribution of air concentration along the normal to the bottom. Results are compared with experimental distributions of concentrations, and a satisfactory relationship is obtained.
Self-aeration of open channel flow
Girgidov, A. D. (author)
2012
Article (Journal)
English
Self-aeration of open channel flow
| Springer Verlag | 2012
Self-aeration of open channel flow
| Online Contents | 2012
Turbulent Open-Channel Flows: Drop-Generation and Self-Aeration
| British Library Online Contents | 1998
DISCUSSIONS - Turbulent Open-Channel Flows: Drop-Generation and Self-Aeration
| Online Contents | 1999
DISCUSSIONS - Turbulent Open-Channel Flows: Drop-Generation and Self-Aeration
| Online Contents | 1999