Hydraulics: Difference between revisions
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The hydraulic design of a dam includes a knowledge of the following foundational topics: pressurized and free-surface flow, uniform flow, gradually and rapidly varied flow, steady and unsteady flow, energy and momentum principles, energy losses, and [[cavitation]]. <ref name ="USACE">[[Hydraulic Design of Spillways (EM 1110-2-1603) | EM 1110-2-1603 | The hydraulic design of a dam includes a knowledge of the following foundational topics: pressurized and free-surface flow, uniform flow, gradually and rapidly varied flow, steady and unsteady flow, energy and momentum principles, energy losses, and [[cavitation]]. <ref name ="USACE">[[Hydraulic Design of Spillways (EM 1110-2-1603) | Hydraulic Design of Spillways (EM 1110-2-1603), USACE, 1992]]</ref> | ||
==Types of Evaluations== | ==Types of Evaluations== | ||
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==Best Practices Resources== | ==Best Practices Resources== | ||
{{Document Icon}} [[Federal Guidelines for Inundation Mapping of Flood Risks Associated with Dam Incidents and Failures (FEMA P-946) | Federal Guidelines for Inundation Mapping of Flood Risks Associated with Dam Incidents and Failures (FEMA P-946) | {{Document Icon}} [[Design Standards No. 14: Appurtenant Structures for Dams (Ch. 3: General Spillway Design Considerations) | Design Standards No. 14: Appurtenant Structures for Dams (Ch. 3: General Spillway Design Considerations), USBR, 2022]] | ||
{{Document Icon}} [[Selecting and Accommodating Inflow Design Floods for Dams (FEMA P-94) | Selecting and Accommodating Inflow Design Floods for Dams (FEMA P-94) | {{Document Icon}} [[Technical Release 210-60: Earth Dams and Reservoirs | Technical Release 210-60: Earth Dams and Reservoirs, NRCS, 2019]] | ||
{{Document Icon}} [[Federal Guidelines for Inundation Mapping of Flood Risks Associated with Dam Incidents and Failures (FEMA P-946) | Federal Guidelines for Inundation Mapping of Flood Risks Associated with Dam Incidents and Failures (FEMA P-946), FEMA, 2013]] | |||
{{Document Icon}} [[Hydraulic Design of Spillways (EM 1110-2-1603) | Hydraulic Design of Spillways (EM 1110-2-1603) | {{Document Icon}} [[Selecting and Accommodating Inflow Design Floods for Dams (FEMA P-94) | Selecting and Accommodating Inflow Design Floods for Dams (FEMA P-94), FEMA, 2013]] | ||
{{Document Icon}} [[Hydraulic Design of Reservoir Outlet Works (EM 1110-2-1602) | Hydraulic Design of Reservoir Outlet Works (EM 1110-2-1602) | {{Document Icon}} [[Hydraulic Design of Spillways (EM 1110-2-1603) | Hydraulic Design of Spillways (EM 1110-2-1603), USACE, 1992]] | ||
{{Document Icon}} [[Design of Small Dams | Design of Small Dams, USBR, 1987]] | |||
{{Document Icon}} [[Hydraulic Design of Reservoir Outlet Works (EM 1110-2-1602) | Hydraulic Design of Reservoir Outlet Works (EM 1110-2-1602), USACE, 1980]] | |||
==Trainings== | ==Trainings== | ||
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{{Video Icon}} [[On-Demand Webinar: Designing Spillways to Mitigate Failure Modes]] | {{Video Icon}} [[On-Demand Webinar: Designing Spillways to Mitigate Failure Modes]] | ||
{{Video Icon}} [[On-Demand Webinar: Introduction to Addressing Inadequate Conveyance Capacity at Dams]] | {{Video Icon}} [[On-Demand Webinar: Introduction to Addressing Inadequate Conveyance Capacity at Dams]] | ||
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Revision as of 20:36, 19 December 2022
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| Analysis of spillway hydraulics using Computational Fluid Dynamics (CFD). |
The hydraulic design of a dam includes a knowledge of the following foundational topics: pressurized and free-surface flow, uniform flow, gradually and rapidly varied flow, steady and unsteady flow, energy and momentum principles, energy losses, and cavitation. [1]
Types of Evaluations
- Hydraulic Performance of Spillways
- Hydraulic Performance of Outlet Works
- Dam Breach Inundation Analysis
- Spillway Integrity Analysis
- Erosion & Scour Mitigation
- Tailwater Modeling
Types of Hydraulic Modeling
Selection of either a one-, two-, or three-dimensional hydraulic model is necessary depending on both the complexity of the flow conditions and the level of accuracy required of the model. Hydraulic modeling helps to attain a higher-optimized level of operation of the dam and reduce uncertainty.
“Maintaining the high efficiency of a spillway requires careful design of the spillway crest, the approach configuration, and the piers and abutments. For this reason, when design considerations require departure from established design data, model studies (or three-dimensional computer models) of the spillway system should be accomplished”. Physical model studies or three-dimensional Computational Fluid Dynamics (CFD) models are recommended to confirm any design that involves complex geometric considerations and/or large discharges and velocities. [1]
- One-Dimensional Hydraulic Models
- Two-Dimensional Hydraulic Models
- Three-Dimensional Hydraulic Models
Best Practices Resources
Technical Release 210-60: Earth Dams and Reservoirs, NRCS, 2019
Selecting and Accommodating Inflow Design Floods for Dams (FEMA P-94), FEMA, 2013
Hydraulic Design of Spillways (EM 1110-2-1603), USACE, 1992
Design of Small Dams, USBR, 1987
Hydraulic Design of Reservoir Outlet Works (EM 1110-2-1602), USACE, 1980
Trainings
On-Demand Webinar: Hydraulics 101: Intro to Hydraulics for Dam Safety
On-Demand Webinar: Hydraulics 201 for Dam Safety
On-Demand Webinar: Inlet and Outlet Hydraulics for Spillways and Outlet Structures
On-Demand Webinar: Designing Spillways to Mitigate Failure Modes
On-Demand Webinar: Introduction to Addressing Inadequate Conveyance Capacity at Dams
Citations:
- ↑ 1.0 1.1 Hydraulic Design of Spillways (EM 1110-2-1603), USACE, 1992 Cite error: Invalid
<ref>tag; name "USACE" defined multiple times with different content
Revision ID: 6016
Revision Date: 12/19/2022