Post on 17-Dec-2015
ALDEN RESEARCH LABORATORY, INC. 1
Waller Creek Outlet CFD Modeling Results
Connection #2 with 3’ High Spillway Flip Bucket2-Year Flood (2320 cfs)
Lady Bird Lake Inflow (1.25 ft/s)
9/9/2008
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General View of the CFD Model
9/9/2008
General View
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Plan View of the CFD Model
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Velocity Contours at Water Surface
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Flow Patterns
From the Tunnel Shaft to the Spillway
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Velocity Magnitude Contours and Velocity Vectors in Horizontal Plane at Z=406 ft
9/9/2008
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Velocity Magnitude Contours and Velocity Vectors in Horizontal Plane at Z=415 ft
9/9/2008
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Velocity Magnitude Contours and Velocity Vectors in Horizontal Plane at Z=422 ft
9/9/2008
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Velocity Magnitude Contours and Velocity Vectors in Horizontal Plane at Z=430 ft
9/9/2008
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Velocity Magnitude Contours and Velocity Vectors in Longitudinal Plane at X=200 ft
9/9/2008
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Velocity Magnitude Contours and Velocity Vectors in Longitudinal Plane at X=150 ft
9/9/2008
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Velocity Magnitude Contours and Velocity Vectors in Longitudinal Plane at X=250 ft
9/9/2008
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Velocity Magnitude Contours and Velocity Vectors in Lateral Plane at Y=400 ft
9/9/2008
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Velocity Magnitude Contours and Velocity Vectors in Lateral Plane at Y=350 ft
9/9/2008
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Velocity Magnitude Contours and Velocity Vectors in Lateral Plane at Y=450 ft
9/9/2008
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Velocity Magnitude Contours and Velocity Vectors in Lateral Plane at Spillway Crest
9/9/2008
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Flow Impacts
Caused by Stacked Rock at the Ends of the Spillway Crest
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Left Side Stacked Rock
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Right Side Stacked Rock
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Velocity Profiles
Along the Ogee Spillway Section
9/9/2008
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Velocity Profile along the Spillway Ogee Section at X=200 ft
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Velocity Profile along the Spillway Ogee Section at X=150 ft
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Velocity Profile along the Spillway Ogee Section at X=250 ft
9/9/2008
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Hydraulic Jump at the Toe of the Spillway
Velocity and Froude Number
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Velocity
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Froude Number
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Scour Potential
In the Exit Channel, both Concrete Apron and Riprap Section
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Velocity Magnitude Contours and Velocity Vectors in the Exit Channel in Horizontal Plane at Z=415 ft
9/9/2008
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Velocity Magnitude Contours and Velocity Vectors in the Exit Channel in Horizontal Plane at Z=422 ft
9/9/2008
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Velocity Magnitude Contours and Velocity Vectors in Horizontal Plane at Z=415 ft
9/9/2008
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Velocity Magnitude Contours and Velocity Vectors in Horizontal Plane at Z=422 ft
9/9/2008
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Velocity Magnitude Contours and Velocity Vectors in the Exit Channel in Longitudinal Plane at X=200 ft
9/9/2008
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Velocity Magnitude Contours and Velocity Vectors in the Exit Channel in Longitudinal Plane at X=150 ft
9/9/2008
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Velocity Magnitude Contours and Velocity Vectors in the Exit Channel in Longitudinal Plane at X=250 ft
9/9/2008
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Velocity Magnitude Contours and Velocity Vectors in the Exit Channel in Longitudinal Plane 1 foot apart Left Retaining Wall
9/9/2008
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Velocity Magnitude Contours and Velocity Vectors in the Exit Channel in Longitudinal Plane 1 foot apart Right Retaining Wall
9/9/2008
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Velocity Magnitude Contours and Velocity Vectors in Vertical Planes
9/9/2008
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Water Surface Elevations
At Spillway Crest and Upstream
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Water Surface Elevations at Spillway Crest and Upstream
9/9/2008
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Pressure Forces
On the Pipe Riser and Water Intake Screen
9/9/2008
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Pressure Force on Pipe Riser and Water Intake
Time (second) X-Force (lbf) Y-Force (lbf) Z-Force (lbf) Total (lbf)Average 1774 -622 -622 1895
9/9/2008