Hydraulic motors, with related subjects, including centrifugal pumps, pipes, and open channels, designed as a text-book for engineering schools (1905)
Church, Irving Porter, 1851-1931 · New York : J. Wiley & Sons; [etc, ] · leaf 46
y. Breast wheels are inuse on falls of 5 to 15 ft.,and using from 5 to 80cub. ft. per second. The water may be in- j_jtroduced either by means pr=«^^of an overfall weir, or =L*£?s5q3sthrough a sluice-weir, withgates. Fig. 8 shows avertical section of a breastwheel in which the formermethod has been… … Q = yeh0V2gh0; (1) whence the required depth of the overfall (measured from thesurface of still water 3 or 4 feet back of the weir) will be HM » The value of the coefficient /* varies from about 0.60 fora sharp-edged sill at upper edge of a vertical plate, to 0.80or more for a rounded sill. In the…
Hydraulic machinery
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