Abstract
Discusses design of air entraining devices air slots for prevention of cavitation erosion of a spillway surface. Examines the principles of operation, i.e. how a local pressure drop is achieved and studies possible designs for aeration devices. Compares deflectors, offsets and grooves and considersthe theoretical aspects of design. Subdivides the aeration zone into shear spray and mixing zones and examines values of the entrainment coefficient obtained for various shapes of aerator. Supply systems may be viewed as water jet aspirator systems. The criterion for preventing cavitation erosion is briefly discussed. Air concentration downstream of an air slot and near the channel bottom is an important factor in erosion protection and data from prototype examples is compiled in tables, with additional comments. (C.J.U.)
| Original language | English |
|---|---|
| Journal | [No source information available] |
| State | Published - 1984 |