The field data provided by Buyalski (1983) were employed for the prediction of the discharge coefficient of submerged radial gates. Eleven canal check structures with considerable variation in geometry were selected for the modeling process. The number of radial gates per check structure ranged from two to five. The gate seal types of investigated radial gates are hard rubber bars and music notes, except for the west canal, which uses the features of both (Figure 1). The characteristics of the investigated radial gates are presented in Tables 1 and 2.
Table 1
Physical and hydraulic properties of selected radial gates for submerged flow conditions
| Check structure | Seal type | Number of gates | Maximum upstream depth (m) | Maximum downstream depth (m) | Gate radius (m) | Pinion height, α (m) | Gate width (each) (m) | Number of data |
|---|---|---|---|---|---|---|---|---|
| Velocity Barrier | Hard Rubber | 3 | 3.29 | 2.51 | 4.20 | 2.74 | 4.27 | 38 |
| Fish Screen | Hard Rubber | 3 | 4.26 | 4.26 | 4.96 | 3.20 | 4.27 | 8 |
| Coyote Canal | Hard Rubber | 2 | 4.26 | 4.26 | 6.48 | 4.11 | 5.49 | 4 |
| West Canal | Hard Rubber and Music Note | 3 | 400.31 | 400.31 | 6.10 | 3.66 | 4.65 | 82 |
| Putah South | Music Note | 2 | 3.13 | 3.13 | 3.44 | 2.13 | 3.05 | 4 |
| Sand Creek | Music Note | 3 | 5.28 | 5.28 | 6.48 | 4.11 | 6.10 | 20 |
| Dodge Avenue | Music Note | 3 | 5.28 | 5.28 | 6.48 | 4.11 | 6.10 | 22 |
| Kaweah River | Music Note | 5 | 5.19 | 5.19 | 7.93 | 5.12 | 3.35 | 35 |
| Fifth Avenue | Music Note | 3 | 5.19 | 5.19 | 6.48 | 4.11 | 5.49 | 9 |
| Tule River | Music Note | 4 | 5.25 | 5.25 | 7.93 | 5.12 | 3.66 | 6 |
| California Aqueduct | Hard Rubber | 3 | 8.11 | 8.11 | 11.44 | 7.62 | 7.62 | 201 |
| Check structure | Seal type | Number of gates | Maximum upstream depth (m) | Maximum downstream depth (m) | Gate radius (m) | Pinion height, α (m) | Gate width (each) (m) | Number of data |
|---|---|---|---|---|---|---|---|---|
| Velocity Barrier | Hard Rubber | 3 | 3.29 | 2.51 | 4.20 | 2.74 | 4.27 | 38 |
| Fish Screen | Hard Rubber | 3 | 4.26 | 4.26 | 4.96 | 3.20 | 4.27 | 8 |
| Coyote Canal | Hard Rubber | 2 | 4.26 | 4.26 | 6.48 | 4.11 | 5.49 | 4 |
| West Canal | Hard Rubber and Music Note | 3 | 400.31 | 400.31 | 6.10 | 3.66 | 4.65 | 82 |
| Putah South | Music Note | 2 | 3.13 | 3.13 | 3.44 | 2.13 | 3.05 | 4 |
| Sand Creek | Music Note | 3 | 5.28 | 5.28 | 6.48 | 4.11 | 6.10 | 20 |
| Dodge Avenue | Music Note | 3 | 5.28 | 5.28 | 6.48 | 4.11 | 6.10 | 22 |
| Kaweah River | Music Note | 5 | 5.19 | 5.19 | 7.93 | 5.12 | 3.35 | 35 |
| Fifth Avenue | Music Note | 3 | 5.19 | 5.19 | 6.48 | 4.11 | 5.49 | 9 |
| Tule River | Music Note | 4 | 5.25 | 5.25 | 7.93 | 5.12 | 3.66 | 6 |
| California Aqueduct | Hard Rubber | 3 | 8.11 | 8.11 | 11.44 | 7.62 | 7.62 | 201 |
Table 2
Physical and hydraulic properties of selected radial gates for free-flow conditions
| Check structure | Seal type | Number of gates | Maximum upstream depth (m) | Gate radius (m) | Pinion height, α (m) | Gate width (each) (m) | Number of data |
|---|---|---|---|---|---|---|---|
| East Canal Headworks | Music Note | 2 | 6.32 | 8.01 | 4.57 | 4.88 | 37 |
| Dez Irrigation Network, Main West Canal | Sharp | 2 | 3 | 7 | 3.62 | 15 | 80 |
| Check structure | Seal type | Number of gates | Maximum upstream depth (m) | Gate radius (m) | Pinion height, α (m) | Gate width (each) (m) | Number of data |
|---|---|---|---|---|---|---|---|
| East Canal Headworks | Music Note | 2 | 6.32 | 8.01 | 4.57 | 4.88 | 37 |
| Dez Irrigation Network, Main West Canal | Sharp | 2 | 3 | 7 | 3.62 | 15 | 80 |
Figure 1
Different types of radial gates.