Alton Pumping Station, Alton, Illinois. Hydraulic Model Investigation
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS HYDRAULICS LAB
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General 110-scale and section 13-scale scale models of the approach channels, sumps, and water pumps intake of the proposed Alton Pumping Station, Alton, Illinois, were used to evaluate and develop a practical design that would provide satisfactory hydraulic performance for all anticipated flow conditions. The sump included three pumps with a total design capacity of 223 cfs. Initial operation of the general model with vertical suction intakes indicated substantial swirl in the suction pumps intake and surface vortices. Various modifications investigated to reduce swirl included elevating the lower edge of the breast wall, closing access ports, streamlining flow adding a 2.0 - ft radius to the lower edge of the breast wall, installing fillets in the corners of the pump bay, and installing a splitter wall beneath the pump bell. A design was developed that provided satisfactory hydraulic performance except when the trash rack was partially blocked.
- Civil Engineering
- Fluid Mechanics