Summary of hydraulic modelling undertaken for the works at the different design stages
| CFD modelling | Physical modelling | |||
|---|---|---|---|---|
| Hydraulic structure | Pre-contract award | Post-contract award | Pre-contract award | Post-contract award |
| Existing storm pumping station | Yes | No | No | Yes |
| Modified storm pumping station | Yes | Yes | Yes | Yes |
| Low-flow pumping station | Yes | Yes (for design changes) | Yes | Yes |
| Inlet channel | Yes | Yes | Yes | Yes (to verify design changes) |
| Inlet channel (temporary works) | No | Yes | No | No |
| Interception chamber | Yes | Yes | Yes | Yes (to verify design changes) |
| Connection culvert | Yes | Yes | Yes | Yes |
| Vortex generator and drop tube | Yes | Yes (for design changes) | Yes | Yes (vortex generator) |
| Drop shaft | Yes | Yes (for design changes) | Yes | No |
| Horizontal deaeration chamber and connection tunnel | Yes | Yes | Yes | No |
| Physical modelling | ||||
|---|---|---|---|---|
| Hydraulic structure | Pre-contract award | Post-contract award | Pre-contract award | Post-contract award |
| Existing storm pumping station | Yes | No | No | Yes |
| Modified storm pumping station | Yes | Yes | Yes | Yes |
| Low-flow pumping station | Yes | Yes (for design changes) | Yes | Yes |
| Inlet channel | Yes | Yes | Yes | Yes (to verify design changes) |
| Inlet channel (temporary works) | No | Yes | No | No |
| Interception chamber | Yes | Yes | Yes | Yes (to verify design changes) |
| Connection culvert | Yes | Yes | Yes | Yes |
| Vortex generator and drop tube | Yes | Yes (for design changes) | Yes | Yes (vortex generator) |
| Drop shaft | Yes | Yes (for design changes) | Yes | No |
| Horizontal deaeration chamber and connection tunnel | Yes | Yes | Yes | No |
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