Accession Number:

ADA237488

Title:

Alton Pumping Station, Alton, Illinois. Hydraulic Model Investigation

Descriptive Note:

Final rept.

Corporate Author:

ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS HYDRAULICS LAB

Report Date:

1991-05-01

Pagination or Media Count:

68.0

Abstract:

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.

Subject Categories:

  • Civil Engineering
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE