论文信息 - Flow downstream of an aerator - aerator spacing

Flow downstream of an aerator - aerator spacing

Cavitation erosion damage to spillway surfaces may be prevented with the use of aeration devices (aerators), introducing air in the layers close to the channel bottom. A study of the flow downstream of a spillway aerator was performed on the Clyde dam spillway model. The results are presented and a comparison between the free-surface aeration and the flow downstream of an aerator is developed. Such a method enables to compute the flow parameters at any point downstream of an aerator, in particular the air concentration near the spillway bottom. The computed results are compared with experimental data. This analysis contributes to a method for the determination of aerator spacing and aerator location.

Hubert Chanson

[1] S. O. Russell,et al. Effect of Entrained Air on Cavitation Damage , 1974 .

[2] Raymond Comolet. Sur le mouvement d'une bulle de gaz dans un liquide , 1979 .

[3] Hubert Chanson. A Study of Air Entrainment and Aeration Devices on a Spillway Model , 1988 .

[4] R. Keller,et al. DEVELOPING REGION IN SELF-AERATED FLOWS , 1974 .

[5] A. J. Peterka,et al. The Effect Of Entrained Air On Cavitation Pitting , 1953 .

[6] F R Brown. Comments on Congress International Association for Hydraulic Research (IAHR) (21st) Held in Melbourne, Australia on 19-23 August 1985. , 1987 .

[7] Robert Hickling,et al. Collapse and rebound of a spherical bubble in water , 1964 .

[8] Robert J. Keller,et al. Design Chart for Predicting Critical Point on Spillways , 1977 .

[9] F. Henderson. Open channel flow , 1966 .

[10] Alvin G. Anderson,et al. Experiments on Self-Aerated Flow in Open Channels , 1958 .

[11] Paul Cain,et al. Measurements within self-aerated flow on a large spillway , 1978 .