CE Hydraulics. Andrew Kennedy 168 Fitzpatrick

Transcription

1 CE Hydraulics Andrew Kennedy 168 Fitzpatrick

2 Final Exam, 8AM May 7, Will cover entire course 155 Fitzpatrick Around half on material since last midterm Like 1.5 midterms in length Multiple choice Free answer writing Free answer calculator problems Will provide separate information packet for use in exam: graphs, tables, etc. Bring all formula sheets Question Session: Saturday, DB 207, 5:30PM

3 Course Topics 1. Pumps, Turbines and Pipe networks Moment of Momentum Revisited Types of pumps and turbines and uses Pump-pipe systems, networks 2. Open Channel Flow Specific Energy and Rapid Transitions Hydraulic Jumps Slowly varying flow Open channel control structures 3. Introduction to Surface Water Hydrology Hydrologic Cycle Rainfall, Runoff and Design Events 4. Hydraulic Structures Dams, weirs, spillways Effects of Hydraulic Structures

4 Pumps, Turbines and Pipe Types of Machines Networks Moment of Momentum: Pump or Turbine? Centrifugal Pumps Simplified Theory Pump Selection Pump-Pipe Systems Intersection of Pump Curves and System Curves Cavitation

5 Pumps Continued Dimensionless groups Head rise coefficient Power coefficient (shaft power) Flow coefficient (discharge) Efficiency (linearly related to other three) Specific Speed and type of machine Types of pumps and turbines Wind Turbines Pipe Networks: Hardy Cross Method

6 Open Channel Flow Types of Flow Uniform Gradually Varying Rapidly Varying Speed of Small Disturbances Froude Number Supercritical, Critical, Subcritical Flow

7 Open Channel Flow Cont. Specific Energy!!! Variation in energy, depth Combined with Bernoulli s equation Minimum energy and super/subcritical lobes Width changes, flow rate changes Broad-Crested Weirs Sharp-Crested Weirs Underflow Gates Hydraulic Jumps

8 Open Channel Flow Cont. Uniform Channel Flow Balance between gravity and friction Manning s equation Compute Flow Rate Compute Depth Compute Slope Compound Channels Design of Lined and Unlined Channels

9 Open Channel Flow Cont. Gradually Varying Flow Friction slope: Manning s equation Depth Changes with distance Normal Depth Actual Depth Critical Depth Flow Profiles Critical Points and their importance

10 Hydrology Hydrologic Cycle: Important Processes Watersheds Units! Runoff and SCS Methods Curve Numbers: Flow Chart and TR-55 Manual Composite Watersheds Situations not in the Tables Incremental Runoff with Time

11 Hydrology Cont. Time of Concentration Sheet Flow Shallow Concentrate Flow Channel Flow Simplified Alternate Method

12 Precipitation Duration Return Period Location Hydrology, Cont. Temporal Variation: Rainfall Type Hydrographs Unit Hydrograph: relationship between runoff and discharge Composite Hydrographs and overall storm runoff

13 Hydrology: TR-55 Method Applicability Tabular Hydrograph Method Subarea Definition Travel Time Selection of Unit Hydrograph Computation and Superposition of discharge from subareas TR-55 Peak Discharge Method Applicability, use

14 Hydrology Cont. Detention Basins Uses and examples TR-55 methodology for estimating storage volume Simple weir design

15 Hydraulic Structures Purposes and Types of Structures Dams Types of Dams Flow Under Dams Grout Curtains Dam Construction

16 Hydraulic Structures Cont. Dam Benefits and Adverse Effects Dam Effects on Long Term Landforms Dam Removal Dam Failure and Reasons Senior Design Project Basics All presentations on Sakai

17 Important Things Not Covered in This Course Detailed Drainage Design Sewers, culverts, subdivision, city drainage, etc. Hydraulic Structures Detail Pollutant Transport and Mixing Coastal Engineering Storm surge, shore protection, erosion, wave damage Sediment Transport, Scour, and Morphological Changes River Engineering, Ports, Harbors, Navigation Engineering Hydrodynamic Loading on Structures Much Hydraulic Software HEC-RAS etc.